Oral bacteria, SEMのイラスト素材

Oral bacteria. Coloured scanning electron micrograph (SEM) of mixed oral bacteria. The mouth contains a large number of bacteria, most of which are harmless or even beneficial. However, some bacteria can cause throat infections or cause the formation of plaque deposits on the teeth, which may lead to decay. Up to 700 species of oral bacteria exist with the average adult having between 30 and 70 different species of bacteria in their mouth. Magnification: x5000 at 10cm high.