[Studies of the immunostimulating properties of lipopolysaccharides and dextran sulfate based on a model of radiogenic immunodepression]. / Untersuchungen der immunstimulierenden Eigenschaften von Lipopolysacchariden und Dextransulfat an einem Modell der radiogenen Immundepression.

At a model of initial immunoresponse of mice to sheep erythrocytes the immunostimulating activity of lipopolysaccharide (LPS) and dextransulphate (DS) was tested. It was shown, that suppression of the immunosystem after influence of radiation can be compensated successfully by application of lipopolysaccharide and dextransulphate. The prophylactic application of these preparation is more ineffective.

[RNA biosynthesis in the microsomes of splenic cells during the inductive phase of the immunological response]. / Biosintez RNK v mikrosomakh kletok selezenki vo vremia induktivnoi fazy immunologicheskogo otveta

RNA labeled with 3H-uridine was extracted from the microsomes of the spleen of the intact and antigen-stimulated mice. A study was made of the composition of this RNA by electrophoresis in polyacrylamide gel. Apart from rRNA, there were revealed in the microsome composition up to 10 RNA components in the mol wt range of from 0.4-10(5) to 7-10(5) dalton and 2 componnents - between 7-10(5) and 1.7-10(6) dalton. Incorporation of 3H-uridine into the rRNA was the maximal 24 hours after the administration of the antigen, whereas the RNA with the mol wt between 0.4-10(5) dalton remaining practically unchanged for a period of three days after the immunization. 3H-uridine incorporation into these RNA was resistant to the action of low antibiotic (actinomycin D) doses. Immunization was not accompanied by the appearance of new, by molecular weight, RNA components.