Assertion: antigen's antibody | /r/CreatedBy | a type of white blood cell
Facets:
value: in response to an antigen
type: CAUSE
Source sentences:
text: Antibodies are produced by a type of white blood cell called a B cell (B lymphocyte ).
text: Antibodies are produced by a type of white blood cell called B cell (B lymphocyte) secreted by lymphatic tissue (e.g. bone marrow, lymph nodes) usually in response to an antigen.