Caffeine,molecular model. Atoms are represented as spheres and are colour-coded: carbon (black),hydrogen (silver),nitrogen (blue) and oxygen (red) | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library / Maslo, Miriam |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |