Caffeine molecular model next to a cup of coffee filled with coffee beans. Caffeine acts as a central nervous system stimulant. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / SCIENCE PICTURE CO |
Bildgröße: | 4180 px × 4180 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |