Papovavirus-induced trichogenous tumours in Syrian hamsters (Mesocricetus auratus)

Tumorous, virus-induced skin lesions in two golden hamsters (Mesocricetus auratus) were characterized macroscopically and by means of light- and electron-microscopy. Evidence of a virus was demonstrated in the ultra-thin sections and by the negative staining method. The morphological findings confirm the assumption that infections with papoviruses--probably of the polyomavirus genus--were involved.