Definition of B cell in English:

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B cell


A lymphocyte not processed by the thymus gland, and responsible for producing antibodies. Also called B lymphocyte. Compare with T cell.
Example sentences
  • 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.
  • 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.

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