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Dictionary » C » CD4 T cell

CD4 T cell

Definition

noun, plural: CD4 T cells

A form of T lymphocyte with CD4 receptor on the cell surface that recognizes antigens of a virus-infected cell.


Supplement

This type of T lymphocyte releases lymphokines upon stimulation of its recognition of antigens of a virus-infected cell. Upon its antigen recognition it is activated, stimulating, in turn, B lymphocytes and killer T lymphocytes during the antibody formation.

It is the target cell of AIDS virus, infecting and eventually killing the lymphocyte by the virus.


Variant:

Synonyms:

See also: T cell


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Re: Difference between T-Cell and Phagocyte?

... questions. I have some further questions if you don't mind: 1. Does B cell process the endocyted molecules in similar way as phagocytes do, so ... have to have the same antigen presented, and it binds to them via a CD4 molecule (remember a helper T cell has several CD4 molecules). Activation ...

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by aptitude
Sun Sep 11, 2011 7:27 am
 
Forum: Physiology
Topic: Difference between T-Cell and Phagocyte?
Replies: 10
Views: 37122

Re: Immunology: Th1/Th2 vs cellular/humoral responses

... grasp on. I like to remind myself that just prior to the discovery of T cells, an eminent immunologist of the time proclaimed at a symposium for ... I would like to respectfully disagree with biohazard's assessment that CD4+ T cells are not direct effectors in the way a classical CD8+ T cell ...

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by biohazard
Thu Aug 25, 2011 9:52 am
 
Forum: Cell Biology
Topic: Immunology: Th1/Th2 vs cellular/humoral responses
Replies: 10
Views: 25819

Re: Immunology: Th1/Th2 vs cellular/humoral responses

... grasp on. I like to remind myself that just prior to the discovery of T cells, an eminent immunologist of the time proclaimed at a symposium for ... I would like to respectfully disagree with biohazard's assessment that CD4+ T cells are not direct effectors in the way a classical CD8+ T cell ...

See entire post
by arma9eddon
Wed Aug 24, 2011 8:07 pm
 
Forum: Cell Biology
Topic: Immunology: Th1/Th2 vs cellular/humoral responses
Replies: 10
Views: 25819

Immune System

I may as well make a list out of this! - Cell death can be due to phagocytosis or by the release of membrane perforating enzymes ... (similar role to plasma cells). Each has a single unique surface receptor. - CD4 and CD8 are surface glycoproteins, so not really similar to antibodies. They ...

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by Babybel56
Tue May 10, 2011 7:05 pm
 
Forum: Human Biology
Topic: Immune System
Replies: 4
Views: 3657

Do B cells have receptors and antibodies

Mature naive B-cells have undergone VDJ recombination to give each of them a unique antigen presented ... plasma cells until they've encountered a foreign antibody that's presented by a CD4 T-cell or similar. Whether a B-cell becomes a plasma cell is basically a matter of ...

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by Babybel56
Tue May 10, 2011 6:51 pm
 
Forum: Human Biology
Topic: Do B cells have receptors and antibodies
Replies: 1
Views: 1555
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