antigen

Competitive ELISA ( ) - In competitive ELISA, unlabeled antibody is incubated in the presence of its antigen. Then these bound antibody complexes are then added to an antigen coated well. After washing, unbound antibodies are removed. The more ***ytes in the sample, the less antibodies will be able to bind to antigens in the well. The signal is then detected using labeled secondary antibodies and the decrease in signal is compared to a control. The major advantage of a competitive ELISA is the ability to use crude or impure samples and still selectively bind any antigen that may be present. More videos at Abnova

Bullous Pemphigoid Dr. Wendy Levinbook, MD discusses Bullous Pemphigoid. See more at PLEASE RATE AND COMMENT!!! This disorder typically affects patients over 60 years of age, but it can rarely occur in children. There is no racial or ethnic predilection and the incidence is equal in males and females. Clinically, bullous pemphigoid (BP) is characterized by large tense bullae that are often preceded by red, urticarial patches or plaques. Lesions are most commonly located on the lower abdomen, inner thighs, and flexor forearms although they may occur anywhere. Mucous membrane involvement is uncommon. Lesions are usually associated with marked pruritus but they do not scar. BP is an acquired autoimmune disorder that occurs secondary to the formation of antibodies that interact with bullous pemphigoid antigen 1 (230 kDa intrahemidesmosomal antigen) and bullous pemphigoid antigen 2 (180 kDa hemidesmosomal transmembrane antigen, also known as type XVII collagen). This interaction is then followed by an inflammatory response leading to dermal-epidermal separation. On electron microscopic exam, blister formation occurs in the lamina lucida, between the basal cell membrane and the lamina densa. On histopathologic exam, lesions show a subepidermal blister with fluid, fibrin, and inflammatory cells including numerous eosinophils. Direct IF of perilesional skin demonstrates linear C3 and IgG. Indirect IF using normal stratified squamous epithelia (such as human epidermis or monkey ...

Antigen: protease degradation - PMAP Antigen processing is a biological process that prepares antigens for presentation to special cells of the immune system called T lymphocytes. This process involves two distinct pathways for processing of antigens from an organism's own (self) proteins or intracellular pathogens (eg viruses), or from phagocytosed pathogens (eg bacteria); subsequent presentation of these antigens on class I or class II MHC molecules is dependent on which pathway is used. Both MHC class I and II are required to bind antigen before they are stably expressed on a cell surface. The endogenous pathway is used to present cellular peptide fragments on the cell surface on MHC class I molecules. If a virus had infected the cell, viral peptides would also be presented, allowing the immune system to recognize and kill the infected cell. Worn out proteins within the cell become ubiquitinated, marking them for proteasome degradation. The exogenous pathway is utilized by professional antigen presenting cells to present peptides derived from proteins that the cell has endocytosed. The peptides are presented on MHC class II molecules. Proteins are endocytosed and degraded by acid-dependent proteases in endosomes; this process takes about an hour.

Understanding Blood Types This video will discuss the physiology behind the various blood groups. Antigens and antibodies are also discussed in relationship to the different blood groups: type O, A,B, and AB.

Prostate Cancer Screening: PSA (Part 1 of 2) Dr. Siegel explains the PSA (Prostate Specific Antigen) test used to screen for and monitor prostate cancer.

Dynahead - Layers of Days (official video) Layers of Days - Taken from the album "Antigen" © 2009 Dynahead .br Buy the album at http or

The Antigen Trailer1.avi This is a trailer for a short film I wrote, Directed, acted, filmed, edited and produced. My name Is Michael Yammine and I went to School in Binghamton, New York. I am an aspiring Director and writer. Please enjoy the trailer and for those other aspiring good luck and please feel free to share your work! M

TCR-APC Interaction This video describes the process by which an antigen presenting cell interacts with a T cell. This video is from: Janeway's Immunobiology, 7th Edition Murphy, Travers, & Walport ISBN: 978-0-8153-4123-9

Immunology Lecture Mini-Course, 3 of 14: Antigen Recognition by T lymphocytes www.einstein.yu.edu - Immunology Lecture 3 of 14 "Antigen Recognition by T lymphocytes." Harris Goldstein, MD, director, Einstein-Montefiore Center for AIDS Research, professor of pediatrics and microbiology & immunology and the Charles Michael Chair in Autoimmune Diseases, delivers a mini-course that provides a comprehensive overview in basic immunology for graduate and medical students and for anyone interested in understanding how the immune system works. This mini-course was organized by the KwaZulu-Natal Research Institute for Tuberculosis and HIV (K-RITH) at the Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa to provide Sub-Saharan students, research trainees and HIV and TB investigators with a comprehensive course in immunology. (January 2010). See related lecture slides at: www.einstein.yu.edu

Antigen - 7 Sisters The band Antigen performing "7 Sisters". Taken from their DVD Sampler.

8. Cell Communication and Immunology (cont.) Frontiers of Biomedical Engineering (BENG 100) Professor Saltzman continues his discussion of cell communication in the body, extending the description to the nervous and immune system. Professor Saltzman describes the mode of signal transmission in neurons: action potential in the axon, and neurotransmitter release at the synaptic cleft. He also introduces elements of the innate and adaptive immune system. The adaptive immune system is presented as a host/foreign antigen recognition system involving immune cells (T, B, and macrophages), antibodies, and the major histocompatibility complex 1 and 2. Immune response by cytotoxic T cells, T helper cells, and B cells to antigen recognition are discussed in detail. 00:00 - Chapter 1. Overview of the Nervous System 05:28 - Chapter 2. Cell Communication in Nervous System 22:18 - Chapter 3. Overview of the Immune System 28:23 - Chapter 4. Immune System Responses against Foreign Hosts 40:27 - Chapter 5. Cytotoxic T-cells and Antibodies Complete course materials are available at the Open Yale Courses website: open.yale.edu This course was recorded in Spring 2008.

Hepatitis B Virus Surface Antigen in HD The dane particle is the entire hepatitis B virion. The outer layer of the Hepatitis B virus (ie the lipid envelope) is decorated with Hepatitis B surface antigen (HBsAg). The structure in this presentation reveals an octahedral, symmetrical arrangement of HBsAg. Hepatitis B surface antigen components can also assemble as incomplete viruses (ie filaments and spheres) that lack the partially duplex DNA that typically resides in the dane particle. The HBsAg is often referred to as "S protein." Hepatocytes are the primary site of replication of the HBV. According to the CDC, HBV is contained in blood and body fluids. It is transmitted percutaneously and permucosally, and the virus can result in a chronic infection. Vaccination is a mainstay in preventing the disease, but may also be used if exposure to the virus occurs. Interferon alpha and lamivudine (a nucleoside ***ogue) may be used to treat HBV infections. During an acute infection with Hepatitis B virus, the levels of Hepatitis B surface antigen rise quickly. Soon thereafter, protective IgM antibodies to the Hepatitis B core develop. Antibodies to the core antigen indicates past infection and last for a lifetime. Alternatively, during chronic hepatitis B infections, surface antigen is also present. Protective anti-core antibodies are again expected, except these will now be of the IgG type.

Tracking Your PSA (Prostate Specific Antigen) Results "The prostate specific antigen, or PSA, test is a simple blood test used to screen for prostate cancer. It measures the amount of PSA in a mans bloodstream. PSA is a protein produced by the cells of the prostate gland. This measurement, along with other factors, helps your primary care provider determine your relative risk for prostate cancer. MD Anderson recommends that beginning at age 50, men with no family history of prostate cancer should begin annual prostate cancer screening exams. African-American men and men with a family history of prostate cancer should begin annual screening exams at age 45. Both a digital rectal exam and a PSA blood test should be performed."

The Antibody Song We recorded all of the music on garage band and edited the movie using imovie. The whole video was filmed at Stanford University. Music performed and recorded by Devin King. Lyrics performed and written by Lnzz Liebson. Music video edited by Lnzz and Devin. The song is based off of Jason Mraz's "Curbside Prophet." Lyrics: CHORUS Im just an antibody floatin round in your body waiting for a foreign antigen. Im just an antibody floatin round in your body waiting for an antigen to come in. Im just an antibody floatin round in your body waiting for a foreign antigen. Im just an antibody floatin round in your body waiting for an antigen to come in. Yo Yo it all started way back in the bone marrow A new B cell was made and through the marrow it flowed Bumping into self-antigens down the road But it didnt bind them instead it let them go I was accepted as an antibody wasnt rejected self-antigens I inspected, but always neglected well Look at me now, Look at me now, Look at me now now now now CHORUS Well then youre never going to guess What Ive seen seen seen Cause I have no address and I spend my days mess- Ing around and floating down around in your blood stream Well you know that Ive been looking out for Something to bind to my variable region Looking for antigens that will stick with me instead of leaving A foreign antigen I look forward to receiving Im on a one-man mission as I go interweaving With my eye on the prize suddenly hypnotized Because I bind something strange now ...

VJ Bolverk Antigen Shift - Occulus Infernus IDM VJ Bolverk Antigen Shift - Occulus Infernu

Role of Dendritic Cells in Antigen Capture and Presentation to T Cells

Eminem - I'm Not Afraid (AntiGen Dubstep Remix) thought a banging remix was needed so i gave it a go trying to make one :) check out my other tracks and tell me what your thinking comment, rate, subscribe download link: purchase eminem tracks here: bit.ly

Mitotic spindle peptidase - PMAP Prostate-specific membrane antigen (PSMA, NAAG Peptidase, FOLH1) is localized in the vicinity of mitotic spindle poles and associates with the anaphase-promoting complex (APC). Mol Cancer Ther. 2008 Jul;7(7) PSMA-expressing cells prematurely degrade cyclin B and exit mitosis due to increased APC activity and incomplete inactivation of APC by the spindle assembly checkpoint. The cell cycle, or cell-division cycle, is the series of events that take place in a eukaryotic cell leading to its replication. These events can be divided in two brief periods: interphase—during which the cell grows, accumulating nutrients needed for mitosis and duplicating its DNA—and the mitotic (M) phase, during which the cell splits itself into two distinct cells, often called "daughter cells". Client: AstraZeneca/Oncology Division www.astrazeneca-

Professional Antigen Presenting Cells (APC) and MHC II complexes How professional antigen presenting cells present parts of engulfed pathogens on MHC II complexes (major histocompatibility complexes).

Allergy Allergies are abnormal immune responses to allergens like pollen grains, dust, moulds and foodstuffs. The allergens can enter the body through inhalation, ingestion, injection, or external skin contact. Allergens cause abnormal production of immunoglobulin E (IgE), an antibody already present in the body in small amounts. When the antigen makes contact with some part of the body, it is taken up, processed by Antigen Presenting Cell (APC) and presented on a Class II MHC to Helper cells. In the early stages of allergy, a type I hypersensitivity reaction against an allergen, encountered for the first time, causes a response in the T helper cells. These T helper cells produce cytokines which stimulate B-cells to produce large amount of IgE by proliferating IgE producing plasma cells. Secreted IgE circulates in the blood and binds to an IgE-specific receptor on the surface of mast cells and basophils, which are both involved in the acute inflammatory response. The IgE-coated cells, at this stage are sensitized to the allergen. During second exposure, antigen binds to the IgE antibodies on the mast cells. Activated mast cells and basophils undergo degranulation to release histamine and other inflammatory chemical mediators (cytokines, interleukins, leukotrienes, and prostaglandins) from their granules into the surrounding tissue causing several systemic effects, such as Nasal Stuffyness, Sneezing, Runny nose, Watery eyes and mucous discharge. This animation delineates the ...

What is a quality antibody? SDIX Better Antigens. Better Antibodies. Better Assays. (800) 544-8881 info@ A quality antibody is one that works in your assay. It has the appropriate sensitivity and specificity to be able to answer your question or do the work that needs to be done. Also, one antibody will not work in all applications because each application has different performance specifications.

Blood groups and Blood compatibility Check us out at A total of 30 human blood group systems are now recognized by the International Society of Blood Transfusion (ISBT).[2] A complete blood type would describe a full set of 30 substances on the surface of RBCs, and an individual's blood type is one of the many possible combinations of blood-group antigens. Across the 30 blood groups, over 600 different blood-group antigens have been found, but many of these are very rare or are mainly found in certain ethnic groups. Almost always, an individual has the same blood group for life, but very rarely an individual's blood type changes through addition or suppression of an antigen in infection, malignancy, or autoimmune disease. An example of this rare phenomenon is the case of Demi-Lee Brennan, an Australian citizen, whose blood group changed after a liver transplant.[9][10] Another more common cause in blood-type change is a bone marrow transplant. Bone-marrow transplants are performed for many leukemias and lymphomas, among other diseases. If a person receives bone marrow from someone who is a different ABO type (eg, a type A patient receives a type O bone marrow), the patient's blood type will eventually convert to the donor's type. Some blood types are associated with inheritance of other diseases; for example, the Kell antigen is sometimes associated with McLeod syndrome.Certain blood types may affect susceptibility to infections, an example being the resistance to specific malaria species ...

Salmonella typhi Antigen Test - updated: Aug. 20, 2009 1-408-855-0061 info@ LumiQuick Diagnostics Diagnostic Rapid Test RapidTest Lateral Flow QuickView Quick View IVDD in vitro medical biotech biotechnology ViewProfile Profile Salmonella Malaria Dengue IgG Strep A fecal occult blood FOB drug abuse marijuana cocaine...

cellular immune response.MOV Cell-mediated immunity is an immune response that does not involve antibodies or complement but rather involves the activation of macrophages, natural killer cells (NK), antigen-specific cytotoxic T-lymphocytes, and the release of various cytokines in response to an antigen. Historically, the immune system was separated into two branches: humoral immunity, for which the protective function of immunization could be found in the humor (cell-free bodily fluid or serum) and cellular immunity, for which the protective function of immunization was associated with cells. CD4 cells or helper T cells provide protection against different pathogens. Please note that T cells cause death by apoptosis without using cytokines, therefore in cell mediated immunity cytokines are not always present. Cellular immunity protects the body by: 1. activating antigen-specific cytotoxic T-lymphocytes that are able to induce apoptosis in body cells displaying epitopes of foreign antigen on their surface, such as virus-infected cells, cells with intracellular bacteria, and cancer cells displaying tumor antigens; 2. activating macrophages and natural killer cells, enabling them to destroy intracellular pathogens; and 3. stimulating cells to secrete a variety of cytokines that influence the function of other cells involved in adaptive immune responses and innate immune responses. Cell-mediated immunity is directed primarily at microbes that survive in phagocytes and microbes that infect non-phagocytic ...

Antigenic Shift This video describes the process by which viruses can share a segment of their gemone with another strain during infection. This video is from: Janeway's Immunobiology, 7th Edition Murphy, Travers, & Walport ISBN: 978-0-8153-4123-9

The Class I MHC Pathway of Antigen Presentation FVL

Antigen - Take Me Away Antigen at the Carnarvon Castle, Camden, London. Taken from their DVD Sampler.

MHC Class 1 "Class I major histocompatibility complex proteins display short peptides, or antigens, derived from normal cell proteins. Peptide-loaded MHC proteins are located on the cell surface where they can be examined by passing T cells of the immune system. The MHC complex has two subunits. The smaller subunit, b2 microglobulin, resembles an immunoglobulin domain. The larger a subunit also has an immunoglobulin-like domain which is linked to a head domain containing the antigen-binding groove. The antigen-binding groove in the MHC head domain is built from two walls composed of long alpha helices that rest on a floor composed of an eight stranded beta sheet. The peptide on display fits snugly between the helices in the groove.The peptide backbone is bound at both ends by highly conserved regions of the MHC protein. Some peptide side chains extend downwards into specific binding pockets in the groove, while other peptide side chains project upwards where they can be recognized by T cells. MHC class I proteins display their bound peptides on the cell surface for immune surveillance. Immune cells, called cytotoxic or killer T cells, for example, express T-cell receptors that bind to the MHC head domain and the bound peptide. If the cell expressing the MHC protein displays a peptide foreign to the immune system, the T cell is activated by this receptor-MHC interaction. The activated T cell then proceeds to destroy the abnormal cell. Cut-away views of this peptide-bound MHC protein ...

Optical Antigen-Antibody Reaction Measurement Instrument DigInfo - movie.diginfo.tv Takuo Akimoto's research group at the Tokyo University of Technology is looking for a partner to commercialize a portable optical antigen-antibody reaction measurement instrument the group developed. The instrument uses surface plasmon resonance, a phenomenon in which the intensify of reflected light attenuates as the laser incidence angle changes, to measure antigen-antibody reactions simply. Antibodies are affixed to the tip of a glass sensor probe, which is 1.5mm in diameter and 50mm in length, and the probe tip is submerged in a measurement sample. The sample can be as little as 10 microliters. The instrument is 20cm long and 10cm wide, small enough to be carried around. The research group plans to make the instrument smaller and even more accurate and develop more applications for commercializing it.

The Class II MHC Pathway of Antigen Presentation

Blood Typing.mp4 A short video on the eight main types of blood including a description of what types of blood there are, what are the specific antigens for those blood types, what are the antibodies in the plasma given the a person't blood type, how are blood types read using antibody agglutination, what types can donate/receive blood from whom, and what types can donate/receive plasma from whom. A copy of the diagram used in this video can be found at www.kirkwood.edu

Antigen shift live at Rhiz, Wien

Baruch Blumberg, MD, and the Australia Antigen Baruch Blumberg, MD, 1976 Nobel Laureate in Physiology or Medicine, talks with History of Vaccines about getting started in the field of research that led to the discovery of the Australia antigen -- the basis for vaccine against hepatitis B. for more of Dr. Blumberg's interview, see

Antibodies "Antibodies of the immunoglobulin G class are Y-shaped glycoproteins that circulate in the bloodstream. They bind to and inactivate foreign molecules—the antigens—and mark them for destruction. Each IgG molecule consists of two light chains and two heavy chains. The heavy chains have carbohydrates attached. The regions of the antibody that bind to antigens are located at the very tips of the two arms. Each arm of the antibody is composed of four domains. Two are called the variable domains, contributed by the heavy and light chains, and hence called VH and VL. The variable domains are attached to two constant domains, again one each from the heavy and light chains, and hence called CH and CL. Variable and constant domains share a similar structure, called the Ig fold. Each domain consists of a pair of beta sheets, one with three strands and one with five. A single covalent disulfide bridge holds the two sheets together, which results in a rigid and very stable domain. As their name implies, the variable domains vary in amino acid sequence from one antibody molecule to another, thus providing the vast diversity in structure required by the immune system. The antigen-binding site in the variable domains is composed of hypervariable loops that are especially susceptible to sequence variations. Sequence variations in the hypervariable loops are responsible for the specificity of antibodies to particular antigens. Antigens bind to the tip of each antibody arm, generally two ...

Ira Mellman (Genentech) Part 1 Cellular Basis of the Immune Response The immune system is charged with protecting us from invading microorganisms, a task that falls to a complex array of highly specialized cell types spread throughout the body but that must work together as an integrated system. How they accomplish and perform their functions can be wonderfully understood by probing the basic mechanisms governing their activities. In the first video, we will consider the overall organization of the immune response in cellular terms, the innate immune system (comprising evolutionarily ancient phagocytic cells that recognize conserved molecules of microorganisms) and the adaptive immune system (composed of lymphocytes that recognize chemically diverse antigens). See more at

Antigen Shift - The Way Of The North The Way Of The North

Real Antigen Roll Call Back in the dirty south side of Solon, Ohio, Cherndog is attacked by a bunch of thugs from a foreign land. Real Antigen Roll Call 3 6 Macrophage ChernDawg Productions 1° AP Bio 2007

Immunology Lecture Mini-Course, 5 of 14: Antigen Recognition by B cell Receptors www.einstein.yu.edu - Immunology Lecture 5 of 14 "Antigen Recognition by B cell Receptors." Harris Goldstein, MD, director, Einstein-Montefiore Center for AIDS Research, professor of pediatrics and microbiology & immunology and the Charles Michael Chair in Autoimmune Diseases, delivers a mini-course that provides a comprehensive overview in basic immunology for graduate and medical students and for anyone interested in understanding how the immune system works. This mini-course was organized by the KwaZulu-Natal Research Institute for Tuberculosis and HIV (K-RITH) at the Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa to provide Sub-Saharan students, research trainees and HIV and TB investigators with a comprehensive course in immunology. (January 2010). See related lecture slides at: www.einstein.yu.edu

Immunology Lecture Mini-Course, 4 of 14: Antigen Presentation to T lymphocytes www.einstein.yu.edu - Immunology Lecture 4 of 14 "Antigen Presentation to T lymphocytes." Harris Goldstein, MD, director, Einstein-Montefiore Center for AIDS Research, professor of pediatrics and microbiology & immunology and the Charles Michael Chair in Autoimmune Diseases, delivers a mini-course that provides a comprehensive overview in basic immunology for graduate and medical students and for anyone interested in understanding how the immune system works. This mini-course was organized by the KwaZulu-Natal Research Institute for Tuberculosis and HIV (K-RITH) at the Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa to provide Sub-Saharan students, research trainees and HIV and TB investigators with a comprehensive course in immunology. (January 2010). See related lecture slides at: www.einstein.yu.edu

Prostate Specific Antigen Made for US Preventive Medicine Project Animation

Antigen for Android (Droid, Hero, MyTouch, EVO, etc) Antigen is an attack-oriented puzzle game for Android devices. Play as the blue antibody and lock on to the invading antigens. Combo up molecules and pick up power ups for more fun and big scores. Compatible with all Android devices. Multitouch, Tilt, Touch, Keyboard, Trackball and Zeemote input methods supported. This video was recorded on a stock Nexus One running Android 2.2 Available now on the Android Market

What is an Antigen? Autoimmune Diseases and Disorders and Immune System Response This video covers the basics of Antigens: What is an Antigen? Where do I get an Antigen from? Check out my FREE book on Thyroid, Fibromyalgia, Infertility, Anxiety, Depression, ADD/ADHD (also available for purchase on Amazon).