the intima-media samples were extracted successively with 0.15 m nacl , 0.02 m sodium phosphate ph 7.4 ( nacl extract ) and with 4 m guanidinium chloride , 0.05 m sodium acetate ph 5.8 prior ( g1 extract ) and following ( g2 extract ) hydrolysis of the collagen with collagenase .
C0020291
hydrolysis
C0162745
collagenase