• A fully mature B-Cell that produces a specific antibody.
  NCI
  U.S. National Cancer Institute, 2021
• A type of immune cell that makes large amounts of a specific antibody. Plasmacytes develop from B cells that have been activated. A plasmacyte is a type of white blood cell.
  NCI Dictionary of Cancer Terms
  U.S. National Cancer Institute, 2021
• Specialized forms of antibody-producing B-LYMPHOCYTES. They synthesize and secrete immunoglobulin. They are found only in lymphoid organs and at sites of immune responses and normally do not circulate in the blood or lymph. (Rosen et al., Dictionary of Immunology, 1989, p169 & Abbas et al., Cellular and Molecular Immunology, 2d ed, p20)
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2025
• White blood cells that produce large quantities of antibodies as part of an immune system response.
  Harvard Dictionary of Health Terms
  Harvard Medical Publishing, 2011
• Plasma cell, short-lived antibody-producing cell derived from a type of leukocyte (white blood cell) called a B cell. B cells differentiate into plasma cells that produce antibody molecules closely modeled after the receptors of the precursor B cell. Once released into the blood and lymph, these...
  Encyclopedia Britannica
  Encyclopedia Britannica, Inc., 2025