<immunology> A water in oil emulsion used experimentally for stimulating a vigorous immune response to an antigen (that is in the aqueous phase).

Complete Freund's adjuvant contains heat killed tubercle bacilli, these are omitted from Freund's incomplete adjuvant. Unsuitable for use in humans because it elicits a severe granulomatous reaction.

This entry appears with permission from the Dictionary of Cell and Molecular Biology

(11 Mar 2008)