Blood erythrocytes of Brazilian tree-frogs, Phrynohyas
venulosa were found to frequently contain single, small,
densely staining inclusions. Electron microscopy showed these
to be icosahedral viral particles which measured from 250-280
nm in diameter: they were devoid of an envelope, and thus
differed from previously described viruses of frog
erythrocytes. The infected erythrocytes lacked a crystalline
body.
