Scientific study contains "flaws".
D001419:Bacteria / Q000201:enzymology*; D002810:Chondroitinases and Chondroitin Lyases / Q000378:metabolism*; D002811:Chondroitinsulfatases / Q000378:metabolism*; D006801:Humans; D006821:Hyaluronoglucosaminidase / Q000378:metabolism*; D010510:Periodontal Diseases / Q000382:microbiology*
D002811:Chondroitinsulfatases; D006821:Hyaluronoglucosaminidase; D002810:Chondroitinases and Chondroitin Lyases