E. coli bacterium, animation. E. coli bacteria are a normal part of the intestinal flora in humans and other animals, where they aid digestion. However, some strains can produce a toxin that leads to severe illness, or even death. Normal strains can also produce infections in those with weakened immune systems. A typical bacterium is covered by an external capsule (with 'hairs' called fimbriae), and has a rigid cell wall, and an inner cytoplasmic membrane. Some bacteria also have appendages called flagella that they use for locomotion. | |
Licence : | Libre de droits |
Crédit : | Science Photo Library / DESIGN CELLS |
Model Release : | Non requis |
Property release : | Non requis |
Durée : | 15 Secondes |
Aspect ratio : | 16/9 |
Restrictions : | - |