the absolute rate of collagen production was decreased by 50 % in the presence of 1.2 nm tnf alpha during 24-h incubations ( 851 +/- 104 versus 426 +/- 39 pmol/micrograms of dna/h ; p less than 0.01 ) , whereas noncollagen protein production and the rate of procollagen secretion were unchanged .
C0009325
collagen
C0033235
procollagen