[Presence of genomes of phage PBV-1 in the mycelia of the fungus Penicillium brevi-compactum].

The rate of reassociation of 3H-DNA of phage PBV-1 was increased in the presence of 100-fold excess of unlabeled DNA of Penicillium brevi-compactum. On this basis it was calculated that DNA isolated from Penicillium brevi-compactum contained 27--38 phage genomes per haploid cell genome, DNA of PBV-3 virus does not influence the rate of reassociation of PBV-1 virus DNA indicating the lack of homology between DNAs of PBV-1 and PBV-3 phages.