Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Pathological observations on cutaneous papilloma in Japanese Black cattle.

Abstract

Histological studies on the lesions in 10 cattle showed extensive hyperkeratosis, parakeratosis and papillary proliferation with acanthosis down and into the stratum spinosum. Electron microscopy revealed numerous hexagonal virus particles, 30-35 nm in diameter, in the nuclei of the cells of the stratum granulosum and stratum spinosum.