[In situ hybridization in human genome mapping].

The methodological possibilities of non-radioactive in situ hybridization of nucleic acids and its application for an immediate localization of genes and chromosomes are discussed. The advantages of a non-isotope probe labeling versus a use of radioactive substances are emphasized. Various types of compounds used as a label are distinguished.

[Trends in the development of the epidemic process in salmonellosis caused by Salmonella typhimurium and Salmonella enteritidis].

The dynamics and structure of the epidemic process of Salmonella infections among the population of Perm in 1983-1988 was studied and the results of evaluation of antibiotic resistance of the dominating Salmonella species analyzed. The study revealed that a decrease in salmonellosis morbidity caused by S. typhimurium was associated with a limited circulation of anthroponotic (antibiotic-resistant) variants of Salmonellae and a relative increase in the proportion of zoonotic (antibiotic-sensitive) strains.