Caffeine crystals. Polarised light micrograph of crystals of caffeine (1,3,7-trimethylxanthine). Caffeine stimulates the central nervous system increasing alertness and deferring fatigue. Caffeine is also a diuretic (increases the removal of water from the body) and has laxative properties. It is widely known for its presence in coffee beans and tea leaves | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Parker, David |
Bildgröße: | 4200 px × 6118 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |