[Effect of nonviral parasitic agents on the cytogenetic apparatus of animals and man].

On the basis of literature survey, it is shown that many non-viral microorganisms (Rickettsiae, Mycoplasmata, Bacteria, Protozoa) and some Helminths are able to induce substantial aberrations in the chromosome number and the structure of human and animal cells. The data concerning possible factors of aggressiveness of the agents favouring cytogenetic disturbances are presented. Close association between immunoreactivity and the ability of parasitic agents to induce mutations in the organism conditions is emphasized.