title: Circadian rhythm of rat liver and lung collagenase activity.
mesh_terms: D000818:Animals; D002247:Carbon Isotopes; D002940:Circadian Rhythm; D006909:Hydroxyproline / Q000652:urine; D008099:Liver / Q000201:enzymology*; D008168:Lung / Q000201:enzymology*; D008297:Male; D003012:Microbial Collagenase / Q000378:metabolism*; D051381:Rats
chemical_list: D002247:Carbon Isotopes; D003012:Microbial Collagenase; D006909:Hydroxyproline