Giant DNA rings in human mouths may protect against cancer

Giant DNA rings found in human mouths may offer protection against cancer. These newly discovered genetic rings, named "Inocles," are large plasmids carried by bacteria, particularly Streptococcus, in the oral microbiome. They appear to help bacteria adapt to the mouth's environment. Research suggests Inocles may contribute to oral and immune health, potentially reducing cancer risk, though further study is needed to confirm this link.