[Specificity of the chromatin changes in viral infections]

Nine microdensitometric signs (MDMS) of chromatin in cell cultures have been investigated after injecting with 11 viruses of three taxonomic groups. The technics of numeric comparison of systems demonstrated a high specificity of chromatin alterations in relation to the taxonomic position of viruses. The cultures of different groups differ in their MDMS. The group-to-group relations in respect to MDMS are expressed by even more numerous differencies. A test value is suggested to appreciate the specificity in groups of alterations measured upon the great number of signs.