[Chorionic gonadotropin concentration dependence on the phenotype of the Rhesus system]. / Zavisimost' kontsentratsii khorionicheskogo gonadotropina ot fenotipa sistemy rezus.

The phenotypes of the rhesus system in pregnant females were studied for impact on maternal blood chorionic gonadotropin (CGT) levels in the second trimester. The polymorphism of the rhesus system was determined in the groups of pregnant females (n = 1591) having different blood CGT levels. There was a significant increase in the frequency of the Rh(d) phenotype (p < 0.01) among the pregnant women with lower chorionic gonadotropin levels. There was also an evident bimodality in the distribution among RH(d) pregnant females.

[Preparation of test sera of anti-A and anti-B specificity using the method of artificial immunization]. / Poluchenie testovykh syvorotok anti-A i anti-B spetsifichnosti metodom iskusstvennoi immunizatsii.

A high efficacy of artificial immunization with a group-specific substance, fruglamin, was demonstrated; this fact recommends this agent for the preparation of sera with highly active group antibodies. These sera may be used in dubious cases for the identification of the blood group appurtenance and for the preparation of standard AB0 group sera.

[Genetic structure of 2 isolated populations of native inhabitants of Sibiria (Northern Altaics) according to the results of a study of blood groups and isoenzymes]. / Geneticheskaia struktura dvukh obosoblennykh populiatsii korennykh zhitelei Sibiri (severnykh altaitsev) po rezul'tatam izucheniia grupp krovi i izofermento v.

The article comprises the results of the investigation of the frequencies of alleles of 9 gene loci controlling the blood groups, isoenzymes in populations and subpopulations of Cumandinians and Chelkanians. The presence of alleles A2 r(cde) and K at low concentrations was discovered in both groups. The method of genetic distances was used for the investigation of the inter- and intragroup divergence. With respect to certain loci a considerable variation of allelic frequencies from village to village was established.