SV 40-transformed human lung fibroblasts secrete a 92-kDa type IV collagenase which is identical to that secreted by normal human macrophages. - Wilhelm,S.M.; Collier,I.E.; Marmer,B.L.; Eisen,A.Z.; Grant,G.A.; Goldberg,G.I. (J Biol Chem, 1989)