Light micrograph (phase contrast) of the bacteria Lactobacillus bulgaricus,taken from live yoghurt. These rod-shaped,gram-positive bacteria appear as the thin,black lines in the picture. The bacteria grow in acid media & are capable of producing lactic acid from the fermentation of carbo- hydrates. Lactic acid produced by the fermentation of milk is responsible for the preservation & flavour of cheese,yoghurt & other fermented milk products. The bacteria are found in fermenting animal & plant products & in the alimentary tract & vagina of humans & other animals,where they serve a protective role against more dangerous bacteria. Magnification: x400 at 35mm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Walsh, John |
Taille de l’image : | 4609 px × 3177 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |