From the NIH. Tetracyclines block collagenase activity.
D000818:Animals; D005881:Gingiva / Q000201:enzymology*; D006801:Humans; D003012:Microbial Collagenase / Q000378:metabolism*; D010518:Periodontitis / Q000188:drug therapy; D051381:Rats; D013754:Tetracyclines / Q000494:pharmacology* / Q000627:therapeutic use
D013754:Tetracyclines; D003012:Microbial Collagenase