Coloured scanning electron micrograph (SEM) of caffeine crystals (1,3,7-trimethylxanthine). Caffeine stimulates the central nervous system (CNS),increasing alertness and deferring fatigue. It occurs in coffee beans and tea leaves. Magnification: 150x at .8mm wide | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Kinsman, Ted |
Bildgröße: | 936 px × 702 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
|