[Low-molecular peptides in food as factors altering the resistance of rats to emotional stress]. / Nizkomolekuliarnye peptidy pishchi kak faktory izmeneniia ustoichivosti krys k émotsional'nomu stressu.

The authors studied the resistance of animals to emotional stress when they were given in the diet, as a source of protein, casein and a protein fraction composed of a mixture of amino acids and low-molecular peptides (18 and 2.7%) obtained by reprocessing Saccharomyces cerevisiae yeasts, biomass. The ECG, rheovasogram, systolic arterial pressure, and respiratory rate were studied in rats given a diet containing 18 and 2.7% low-molecular peptides (controls) and in the same animals after 24-hour immobilization. Addition of low-molecular peptides in the indicated concentration to the diet reduced the resistance of animals to emotional stress.

[Computer classification of the fusion profiles of human lymphocyte interphase chromatin]. / Klassifikatsiia profilei plavleniia interfaznogo khromatina limfotsitov cheloveka, poluchennaia s pomoshch'iu EVM.

AO fluorescent microscopy coupled with thermal denaturation of DNP cells as modified by the authors was used to study the structure of lymphocyte interphase chromatin from 164 normal persons. Analysis of the data processed by means of a Sperry Univac Computer 90/30 has demonstrated that in 40% of the cases, the melting profiles of DNP cells from normal persons represent, irrespective of the sex, a complicated but consistently repeated curve with 6 peaks at certain temperatures, i.e. that different test subjects have a pronounced "similarity" in the characteristics discussed. In the remaining cases, there have been recorded diverse but consistent deviations that correlated with the sex of the test subjects. No peak at a temperature of 85 degrees and its appearance at 82 degrees C were the most frequent deviations seen in the male group. There have been obtained altogether 5 subgroups for females and 7 subgroups for males. Thus an attempt has been made to classify for the first time the melting profiles of DNP cells from normal persons with the use of computer.