Nicotine stain. View of the brown tar-stained fingernail of a cigarette smoker. This stain is also due to nicotine,the drug in tobacco which acts as a stimulant and causes addiction | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Marazzi, Dr. P. |
Bildgröße: | 4922 px × 3638 px |
Modell-Rechte: | vorhanden |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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