title: Human gingival fibroblast cell lines in vitro. I. Electron microscopic studies of collagenolysis.
mesh_terms: D000293:Adolescent; D000328:Adult; D002460:Cell Line; D002648:Child; D003094:Collagen / Q000378:metabolism*; D005260:Female; D005347:Fibroblasts / Q000378:metabolism / Q000648:ultrastructure; D005881:Gingiva / Q000378:metabolism* / Q000648:ultrastructure; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D010587:Phagocytosis
chemical_list: D003094:Collagen