Medical Dictionary

accessory cell

noun

Medical Definition of accessory cell

  1. :  any of various cells in addition to the T cells and B cells that help to generate an immune response; specifically :  antigen-presenting cell <T lymphocytes cannot recognize free antigen but are dependent on antigen presentation by accessory cells.—Adriano Fontana et al., Nature, 19 Jan. 1984>


Seen and Heard

What made you want to look up accessory cell? Please tell us where you read or heard it (including the quote, if possible).