Wiktionary
n. (context immunology English) A lymphocyte, developed in the bursa of birds and the bone marrow of other animals, that produces antibodies and is responsible for the immune system.
Wikipedia
B cells, also known as B lymphocytes, are a type of white blood cell of the lymphocyte subtype. They function in the humoral immunity component of the adaptive immune system by secreting antibodies. Additionally, B cells present antigen (they are also classified as professional antigen-presenting cells (APCs)) and secrete cytokines.
In mammals, B cells mature in the bone marrow, which is at the core of most bones. In birds, B cells mature in the bursa of Fabricius, a lymphoid organ. (The "B" from B cells comes from the name of this organ, where it was first discovered by Chang and Glick, and not from bone marrow as commonly believed).
B cells, unlike the other two classes of lymphocytes, T cells and natural killer cells, express B cell receptors (BCRs) on their cell membrane. BCRs allow the B cell to bind a specific antigen, against which it will initiate an antibody response.
Usage examples of "b cell".
Brush away fancy titles and B cell was still running things as advised by Mike, backed by a Congress in which we could not lose a test vote--but did lose others we did not want to win, or did not care about.
Brush away fancy titles and B cell was still running things as advised by Mike, backed by a Congress in which we could not lose a test votebut did lose others we did not want to win, or did not care about.
Brush away fancy titles and B cell was still running things as advised by Mike, backed by a Congress in which we could not lose a test vote—.