the delipidated residue was extracted with 5 m-guanidinium chloride/0.05 m-dithiothreitol/0.1 m-tris/0.4 % na2edta , ph 7.5 , before ( extract 1 ) and after hydrolysis with collagenase ( extract 2 ) .
C0020291
hydrolysis
C0162745
collagenase