[The radioadaptation condition at various stages of transition process, induced by gamma-irradiation in bacteria Escherichia coli JM 101]. / Sostoianie radioadaptirovannosti na raznykh stadiiakh indutsirovannogo ostrym gamma-oblucheniem perekhodnogo protsessa u bakterii Escherichia coli JM 101.

The dynamics of transition process caused by gamma-irradiation in bacterial Escherichia coli JM 101 culture was investigated. The bacteria radiostability at different phases of this process was defined. The received results testified to phase gamma-irradiation doze dependent character of bacteria population reaction. It was shown, that the increase of bacteria cell radioresistance occured at the postradiation restoration stage, whereas at the inhibition stage the radioresistance decreased.

[The inhibition of the cellular immune response by Pseudomonas aeruginosa extracts]. / Ingibirovanie kletochnogo immunnogo otveta ékstraktami sinegnoinoi palochki.

Aquatic-phenol trichloroacetic and salt extracts of Pseudomonas aeruginosa have been studied for their effect on hypersensitivity of the delayed type to guinea pig antigen in mice. It is found that salt extracts of wild strains contain thermostable immunosuppressive factors which are of the lipid nature, have high molecular weight and can be inactivated by trichloroacetic acid and phenol. The salt extracts of museum strains as well as aquatic-phenol and trichloroacetic extracts obtained from wild and museum strains had no immunosuppressive activity.