Close up of the cheek of a young boy with a cold sore. This is caused by herpes simplex viral infection. Two types of herpes simplex have been distinguished: Type 1 (HSV-1) and Type 2 (HSV-2). HSV-1 infection commonly occurs in childhood. After the primary infection,the virus persists in a latent state to re-appear and cause recurrent cold sores | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library |
Bildgröße: | 5197 px × 3468 px |
Modell-Rechte: | vorhanden |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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