[Morphogenesis of intracytoplasmic oncornaviruses]

Intracytoplasmic oncorna viruses type-A are de novo formed in the cytoplasma, independently of the organella. In the early phase of the morphologenesis an electrondense patch-like area and the disappearence of the ribosomes can be observed. Double-membrane structures consisting of gylcoprotein can be seen in form of segments, horseshoes or rings. In the centre of the viruses ribosoma-like inclusions may be observed. Viruses of tubular structure appear to be of peculiar forms of the formation of crystals, the mechanism of which is yet unknown.