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Slide 1
Slide 1

... What is sickle cell disease? Sickle cell disease is a disorder that affects the red blood cells, which use a protein called hemoglobin to transport oxygen from the lungs to the rest of the body. Normally, red blood cells are round and flexible so they can travel freely through the narrow blood vesse ...
Cells of the Immune System and Innate Immunity Recommended
Cells of the Immune System and Innate Immunity Recommended

... B and T lymphocytes have evolved to enhance the diversity of the innate immune system. B-1 B cells, and marginal zone B cells are involved in the production of “natural antibodies” that are capable of recognizing a wide range of naturally occurring microbial structures. γδT cells may represent an an ...
Cells, Genetics and Human Body Systems Unit Notes
Cells, Genetics and Human Body Systems Unit Notes

... traits). Recall that each sperm has one set of chromosomes (23) and each egg has one set of chromosomes (23), all with genes that control the same traits. When the sperm and egg meet, the resulting fertilized egg contains two sets of directions for each trait. These “directions” are in the form of a ...
Lymphatic System Notes (2 of 3)
Lymphatic System Notes (2 of 3)

... 2. Immunocompetent (but still Naïve) B & T Cells Travel to Lymph Nodes & other Lymphoid Tissues to face their “Antigen Challenge” in which they become Mature (Activated) 3. Mature B and T cells recirculate through blood & lymph ready to help you! Figure 12.9 Slide 12.30 ...
Fall 2010 MCB Transcript
Fall 2010 MCB Transcript

... to cancer. But the rapid replication of cancer cells is known to trigger a cell’s DNA damage response, so its activation is a suggestive, but not indicative, sign that something might be wrong. Ongoing research by Heiyoun Jung, a grad student in Raulet’s lab, shows that cell proliferation is another ...
02-04-12 ALLERGY: • META-ANALYSIS OF CLINICAL TRIALS ON
02-04-12 ALLERGY: • META-ANALYSIS OF CLINICAL TRIALS ON

... binding and uptake, antigen processing, loading the antigen onto MHC-II molecules and finally expressing the loaded MHC-II molecule on the plasma membrane together with costimulatory molecules. This implicates that the expression of MHC-II on the plasma membrane of a cell per se does not designate a ...
Lecture 15 – Effector Functions of Humoral Immunity:
Lecture 15 – Effector Functions of Humoral Immunity:

10_12_immuno~2
10_12_immuno~2

... European history) is by Thucydides (460-404 BC, Athens), who described the great pestilence of 430-429 BC in Athens, during the second year of the Peloponnesian War, an outbreak that killed more than 30,000 people (out of a population of 172,000) – Thucydides noted that those who had recovered would ...
Adoptive T cell Therapy_5
Adoptive T cell Therapy_5

Transplantation and Rejection
Transplantation and Rejection

... • Xenografts: Between members of different species ( rapidly rejected by IgM or cell mediated rejection) ...
Genetics and Innate and Adaptive Immunity in IBD
Genetics and Innate and Adaptive Immunity in IBD

... especially those with Crohn’s disease suggests a genetic predisposition. It has been hypothesized that the abnormal inflammatory response is due in part to genetically determined alterations in the normal homeostatic processes in play at the gut mucosa that normally serve to ensure a symbiotic relat ...
The antigen binding site of antibodies
The antigen binding site of antibodies

... Discussion sections start next week. The journal article Akira et al, and the relevant problem set questions will be covered. Both are available on the website. Office Hours: Questions about the lecture material are best addressed during office hours (Tues 11-12). I will be holding extra office hour ...
E. coli - De Anza College
E. coli - De Anza College

... • Crystal violet-iodine crystals form in cell ...
Phenotypic Characterization of Human cd T
Phenotypic Characterization of Human cd T

... human cd T-cells in cryopreserved peripheral blood mononuclear cells (PBMC) from healthy individuals (Tables 1 and 2). As the majority of pan-cd T-cell antibodies available commercially proved to be inappropriate for detecting all cd T-cell populations in combination with other markers, this panel p ...
Kuby Immunology 6/e
Kuby Immunology 6/e

... - Surrounded by capsule and divided into lobules - Outer part of lobule is cortex, inner is medulla - Network of epithelial cells, dendritic cells, and macrophages ○ Thymus will induce death of those T cells that ...
MEGAMIN ACTIV on Viral Deseases
MEGAMIN ACTIV on Viral Deseases

... effects were observed in cancer treatment where enhancement of the immune response should be mechanism. How can same agent enhance immune response in one case and repress it in other? Literature analysis by authors of this report identified that indeed antigens do exist that cause such diverse resp ...
Brief Definitive Report SYSTEMIC AUTOIMMUNE
Brief Definitive Report SYSTEMIC AUTOIMMUNE

... attribute the diversity of autoantibodies in these diseases to generalized (polyclonal) activation of Ig-producing B cells (1, 3) . Others believe that autoreactive clones are specifically and preferentially stimulated but that B cells producing antibodies of conventional specificity remain quiescen ...
Title: Vaginal Vaccination with DNA Loaded Nanoparticles
Title: Vaginal Vaccination with DNA Loaded Nanoparticles

... vaccines. It has been observed as a result of studies carried out on experimental animals that these vaccines based on recombinant DNA technology which are obtained with the help of gene engineering have provide cellular and humoral immune response. It is thought that DNA vaccines are safer than vac ...
Researchers Learn How to Turn Cancer Cells into
Researchers Learn How to Turn Cancer Cells into

... proceed to differentiate into dendritic cells and macrophages. Macrophages function mainly by engulfing foreign substances, cellular debris, microbial and cancer cells in a process termed phagocytosis. Key macrophage abilities include: 1. Increasing and decreasing the inflammatory response through m ...
Cell
Cell

...  Chemical reactions take place on the surface of ER.  In some places it has a rough surface and in other places it is smooth.  The rough surface is due to the presence of ribosomes.  Cells making proteins contain a large amount of rough ER. ...
Epstein-Barr Virus
Epstein-Barr Virus

Bi150 Problem Set 4 Due: Tuesday, November 18th 2014 at 4:30
Bi150 Problem Set 4 Due: Tuesday, November 18th 2014 at 4:30

... a. A simple cell is able to recognize bars of light with a specific orientation. Draw a network of on or off center ganglion cell inputs to a simple cell that would enable it to respond to this stimulus. Draw the receptive fields of each ganglion cell needed, and the spatial relationship of these re ...
The Cell Cycle & Cancer
The Cell Cycle & Cancer

... Cells Which No Longer Respond to Cell-Cycle Controls  They divide excessively and invade other tissues  If left unchecked, they can kill the organism ...
1 Defenders of the Body 2 Nonspecific Defenses 3 Specific
1 Defenders of the Body 2 Nonspecific Defenses 3 Specific

Biomolecules are organic molecules built and used inside of cells
Biomolecules are organic molecules built and used inside of cells

< 1 ... 416 417 418 419 420 421 422 423 424 ... 611 >

Polyclonal B cell response



Polyclonal B cell response is a natural mode of immune response exhibited by the adaptive immune system of mammals. It ensures that a single antigen is recognized and attacked through its overlapping parts, called epitopes, by multiple clones of B cell.In the course of normal immune response, parts of pathogens (e.g. bacteria) are recognized by the immune system as foreign (non-self), and eliminated or effectively neutralized to reduce their potential damage. Such a recognizable substance is called an antigen. The immune system may respond in multiple ways to an antigen; a key feature of this response is the production of antibodies by B cells (or B lymphocytes) involving an arm of the immune system known as humoral immunity. The antibodies are soluble and do not require direct cell-to-cell contact between the pathogen and the B-cell to function.Antigens can be large and complex substances, and any single antibody can only bind to a small, specific area on the antigen. Consequently, an effective immune response often involves the production of many different antibodies by many different B cells against the same antigen. Hence the term ""polyclonal"", which derives from the words poly, meaning many, and clones (""Klon""=Greek for sprout or twig); a clone is a group of cells arising from a common ""mother"" cell. The antibodies thus produced in a polyclonal response are known as polyclonal antibodies. The heterogeneous polyclonal antibodies are distinct from monoclonal antibody molecules, which are identical and react against a single epitope only, i.e., are more specific.Although the polyclonal response confers advantages on the immune system, in particular, greater probability of reacting against pathogens, it also increases chances of developing certain autoimmune diseases resulting from the reaction of the immune system against native molecules produced within the host.
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