with the idea that studies on the serological properties of peptides may ultimately aid in the understanding of the precipitin reactions of proteins , antigens have been prepared containing aminobenzoylated dipeptides , namely glycyl-glycine , glycyl-d , l-leucine , d , l-leucyl-glycine and d , l-leucyl-d , l-leucine .
C0012512
dipeptides
C0017984
glycyl-glycine