20th century preserved specimen of a medicinal leech (Hirudo medicinalis). Leeches are blood-sucking worms which were used to treat illnesses ascribed to the patient having an excess of blood | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Davies, Gregory |
Bildgröße: | 2441 px × 3662 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |