Please confirm that you are not located inside the Russian Federation
The link you have selected will take you to a third-party website. We do not control or have responsibility for the content of any third-party site.
This site complies with the HONcode standard for trustworthy health information: verify here.
This photo shows receding gums and a periodontal abscess (arrow) in a person who has periodontitis.
CNRI/SCIENCE PHOTO LIBRARY