[Classification of the avian summer population of the Western Siberian plain].

The proposed classification system reflects the difference between the three population systems: unbuilt land, built-up land, and aquatic-semiaquatic communities. Two superorder groups--north and median--further divided into types were recognized in each of the systems. Most types are divided into subtypes, classes, and subclasses (and sometimes genera of the population).

[The sequelae and late results of surgical treatment in wounds of the heart and pericardium].

An examination of 109 patients after surgical treatment of wounds of the heart and pericardium were performed at late terms after treatment. It was found that good results had 53.2% of the patients, 12.

[Synthesis of visual rhodopsin in a cell-free translation system. II. Functional properties of recombinant rhodopsin and its mutant forms].

Functional expression of bovine visual rhodopsin in the cell-free translation system with cotranslational insertion of the protein into phosphatidylcholine liposomes is described. The recombinant rhodopsin has spectral and functional properties similar to those of natural rhodopsin from bovine retina. Two mutant rhodopsins with amino acid substitutions in the hydrophilic C-terminal domain were obtained using oligonucleotide-directed mutagenesis.

[The fleas of small mammals in the northern taiga of western Siberia].

Data on the species composition of fleas, their abundance and distribution on hosts and on territory are given. Changes in the species composition and abundance of fleas in the latitude and meridional directions are shown.