Estrogen receptors--known and unknown biological functions.

The present literature review includes the data available from 1995 to 2005 about the biological functions of estrogen receptors (ERs) and their role in tumorigenesis. The domain organisation,and cell and tissue localization of two estrogen receptors are described. The article reviews the well known function of these receptors as transcription factors and their less familiar extracellular "non-genome" effects.

[Detection of a factor that intensifies leukocyte migration in chick embryo allantoic fluid infected with influenza virus and a study of its effect on the formation of humoral immunity in guinea pigs].

The allantoic fluid of influenza A/Hong Kong/1/68 virus-infected chick embryos was found to contain a factor enhancing guinea pig leukocyte migration. Intraperitoneal inoculation of guinea pigs with the allantoic fluid containing this factor inhibited synthesis of specific antibodies to influenza virus and sheep erythrocytes.

[Immunodepressive action of influenza virus A/PR8/34 on the primary immune response of mice to ram erythocytes].

Influenza A/PR/8/34 virus was shown to suppress markedly the primary immune response of mice to sheep erythrocytes (SE). The suppressive effect of the virus was manifested by a decrease in the number of antibody-forming cells (AFC) in the spleens of the infected animals and was most marked when the mice had been infected two days before the application of the test antigen (SE). When SE and the virus were inoculated simultaneously the decrease in the AFC number was insignificant.