Immunogenetic analysis of the localization of the Y-factor in the mouse genome. I. Study of interspecific F1 hybrids

Immunogenetic analysis of Y-factor localization in mouse genome was carried out by means of skin grafts. The data obtained indicate to autosomal localization of Y-factor rather than Y-linked one. This leads to the conclusion that Y-factor is a sex-influenced factor, but not a sex-linked one. If the hypothesis about Y-factor localization in Y-chromosome is accepted, this gene will be identical in CGA and C57B1/6 strains and the variety of reactions, caused by T-antigen, will be determined by the genetical constitution of the male donors and the female recipients.     

The problems of ambulatory anesthesiology

Prospects of the development of ambulatory anesthesiology are greatly dependent on understanding its problems caused by the specific character of work of the ambulatory polyclinical institutions. The most important of them is responsibility for safety of the patients during general anesthesia and after it as well as comfort feelings of the patients in the nearest postoperative period. The solution of these problems is related not only with qualification of anesthesiologists but also with the adequate, corresponding to the present-day level of the material technical supply of their work. Of special importance are the "postnarcosis" wards, ability of the personnel to evaluate the psychophysiological state of the patients and correspondence of their life conditions to the requirements of ambulatory anesthesiology.     

The diagnostic potentials for the consulting surgeon in a medical aviation department

Three cases of cri du chat syndrome with varying ages of presentation are compared and contrasted to highlight the clinical features and evolution of the phenotype with time.     

Associative properties of a micropopulation of sensomotor cortex neurons

A new cellular analog of temporary connection has been elaborated on a micropool of neurones in the sensorimotor cortex. Transmitters -- glutamate and acetylcholine, microionophoretically applied near studied neurones, served as paired signals. In case of initial reactivity to paired stimuli, a stronger excitatory effect of the US analog in comparison to that of the CS analog, all studied neurones of the micropopulation developed, within the area of the transmitters' action (less than 100 mc), specific associative rearrangements: enhancement in reactivity to the signal stimulus and reproduction of the reaction to US in response to CS. In control experiments with pseudoconditioning and reverse order of presentation of the same paired stimuli, no rearrangement was observed.     

ESR-spectroscopy in medical practice and biomedical research

The authors describe the use of the ESR technique during the past 20 years. There are many examples of the application of the technique in different investigations. The authors propose the new way of training medical students to apply it.