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B lymphocytes

B lymphocytes
a type of white blood cell that responds to an antigen by producing circulating or humoral antibodies
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...

B Lymphocytes: A Special Case
B lymphocytes are both antigen-receiving and antigen-presenting cells. They bind intact antigens (e.g., virus particles, proteins) with their B cell receptor (BCR). They can come in contact with these antigens by ...

[edit] B lymphocytes and antibodies
A B cell identifies pathogens when antibodies on its surface bind to a specific foreign antigen.[50] This antigen/antibody complex is taken up by the B cell and processed by proteolysis into peptides.

Keywords: Antigen, Antibody, Phagocytosis, Memory cells, B Lymphocytes, Humoral Response, Plasma Cells, T Lymphocytes, Cellular response, Major Histocompability Complex, Artificial active immunity, Monoclonal antibodies, Hybridoma, Pregnancy test, ...

The antigen causes a nonspecific clone of B lymphocytes to proliferate and secrete antibody molecules capable of binding to any foreign antigen
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immunoglobulins - a group of serum molecules produced by B lymphocytes. Also known as antibodies
infection - growth of an organism within the body ...

Helper T cells T cells that stimulate the proliferation of specific B lymphocytes and cytotoxic T cells.

are then "displayed" on the macrophage surface attached to special molecules called MHC II (for Major Histocompatibility Complex Class II). Bacterial peptides are similarly processed and displayed on MHC II molecules on the surface of B lymphocytes.

non-preexisting antibodies were produced in humans in response to the sperm. These antibodies mistakenly recognized native T lymphocytes as foreign antigens, and consequently the T lymphyocytes would fall under attack by the body's B lymphocytes .