Definition of B cell in English:

B cell


  • A lymphocyte not processed by the thymus gland, and responsible for producing antibodies.

    Compare with T cell
    Also called B lymphocyte
    • ‘Three important kinds of lymphocytes are T-cells, B-cells, and Natural Killer Cells.’
    • ‘‘Rituxan works on a component of the immune system called B-cells,’ Dr. Hawker said.’
    • ‘Green tea improves the overall functioning of the immune system, as it is thought to stimulate immune cells, specifically B-cells, which fight infection by building lymphatic tissue and producing antibodies.’
    • ‘There are two types of immune system - a B-cell and a T-cell.’
    • ‘This finding is also consistent with the known high levels of expression of TLR4 on macrophages, dendritic cells, and B-cells.’


B for bursa, referring to the organ in birds where it was first identified.