culturing the bones with pth , 1,25-dihydroxyvitamin d3 , prostaglandin e2 , interleukin-1 , tumor necrosis factor-alpha , catabolin , retinoic acid , or endotoxin ( but not with heparin ) induced resorption , enhanced lysosomal enzyme release , and markedly increased the procollagenase content of the second pool .
C0021755
interleukin-1
C0021753
catabolin