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,(it increase the removal of water from the body) and has laxative properties. It is widely known for its presence in coffee beans and tea leaves | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Pasieka, Alfred |
Taille de l’image : | 5412 px × 4208 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |