Caffeine crystals. Polarised light micrograph (PLM) of crystals of caffeine (1,3,7- trimethylxanthine). Caffeine stimulates the central nervous system increasing alertness and deferring fatigue. It is often contained in analgesic preparations with aspirin or codeine,and it is a diuretic. It occurs in coffee beans,tea leaves & cola nuts. Magnification: x20 at 6x7cm size. x30 at 4x5ins | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Pasieka, Alfred |
Bildgröße: | 5049 px × 4120 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |