B Cell Definition

Any of the lymphocytes that when stimulated by a particular antigen differentiate into plasma cells and that in mammals mature in the bone marrow.
American Heritage
Any of the lymphocytes not derived from the thymus, that mature in the bone marrow and help to build antibodies.
Webster's New World
Any of a class of lymphocytes that, when activated by a specific antigen and usually also by helper T cells, proliferate and differentiate into antibody-secreting plasma cells or memory cells. In mammals, B cells mature in the bone marrow.
American Heritage Medicine

(immunology) 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.


Other Word Forms of B Cell


B cell

Origin of B Cell

  • b(ursa-dependent) cell after the bursa of Fabricius a gland in birds where the cells mature and the first such tissue found in vertebrates

    From American Heritage Dictionary of the English Language, 5th Edition

  • From b(ursa) + cell.

    From Wiktionary

Words Near B Cell in the Dictionary