A cell that develops from a B lymphocyte in reaction to a specific antigen; found in bone marrow and sometimes in the blood WordNet 3.0 & Open English WordNet

Plasma cells, also called plasma B cells or effector B cells, are white blood cells that originate in the lymphoid organs as B cells and secrete large quantities of proteins called antibodies in response to being presented specific substances called antigens. Wikipedia

White blood cells that secrete large volumes of antibodies Wikipedia Disambiguation

White blood cell that secretes large volumes of antibodies Wikidata

A form of B cell that produces antibodies after having reacted with its specific antigen in follicle centers. Wiktionary

Form of lymphocyte. Wiktionary (translation)

A plasma cell. Wiktionary