to study the role of collagen fragments in neutrophil migration , we analyzed the chemotactic properties of peptide fragments of bovine collagen digested with bacterial collagenase or cyanogen bromide and small molecular weight synthetic polypeptides containing proline ( pro ) , hydroxyproline ( hyp ) , and glycine ( gly ) , the major amino acids that comprise collagen .
C0017890
glycine
C0002520
amino acids