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Saliva and bacteria, SEM - stock photo

Saliva and bacteria. Coloured scanning electron micrograph (SEM) of a bacterial biofilm from saliva. This cluster of round bacteria (cocci) are linked together by stands of eDNA (extracellular deoxyribonucleic acid). The eDNA helps the biofilm to adhere to oral surfaces and contributes to antimicrobial resistance.
Saliva and bacteria, SEM
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