Freshwater bacteria,SEM

Numéro d’image : 11560367
Freshwater bacteria,SEM
Freshwater bacteria (Caulobacter crescentus),coloured scanning electron micrograph (SEM). This Gram-negative bacterium is found in fresh water,soil,and sea water. Caulobacter has two very different forms: a mobile ('swarmer') cell with a hair-like flagellum for swimming,and an immobile ('stalked') cell with an adhesive stalk that enables it to attach to surfaces (seen here). Only stalked cells are able to reproduce,which they do by replication. Swarmer cells are able to search for nutrients in nutrient-poor environments. They can also differentiate into stalked cells as they mature
Licence : Droits gérés
Crédit: Science Photo Library / Oeggerli, Martin
Taille de l’image : 3620 px × 4827 px
Model Release : Non requis
Property Release : Non requis
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