bovine ligament tropoelastin and elastin-derived peptides , generated from either human aortic elastin with human neutrophil elastase or from bovine ligament elastin with pancreatic elastase , elicited chemotactic responses that were maximal at 0.2 micrograms/ml ( 3 x 10 ( -9 ) m ) and 0.5-2.0 micrograms protein/ml , respectively .
C0086418
human
C0013765
elastin