Transmission electron micrograph (TEM) of a thin section through an endospore of Bacillus subtilis (the "hay bacillus"),a species of aerobic,rod- shaped,gram positive bacteria. Endospores (resting cells) are produced in response to nutritional deficiency & adverse conditions,and may later germinate to form a vegetative bacterial cell,if conditions improve. The image shows the thick outer spore coat overlying an layered inner coat. Around the central cytoplasm is a thin membrane that is surrounded by the cortex (lightly stained); central nuclear material appears darkly stained & is typically arranged in filaments. Magnification: X 170,000 at 10x8 size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Brain, Dr. Tony |
Taille de l’image : | 3813 px × 4843 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |