Cross-section illustration of the formation of acne in four steps. From left to right: normal hair follicle,clogged duct,bacterial infection,and ruptured follicle | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Shockey, Gwen |
Bildgröße: | 4080 px × 2000 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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