Adjuvant activity of synthetic N-acetylmuramyl peptides in rats

Abstract
The minimal adjuvant-active structure in bacterial cell wall peptidoglycan for the induction of delayed hypersensitivity in rats (WKA) was the N-acetylmuramyl dipeptides (N-acetylmuramyl L-alanyl-D-isoglutamine and N-acetylmuramyl L-alanyl-D-glutamic acid).