[Role of mediators in the quantitative and qualitative changes in the intestinal contents of rabbits with experimental cholera intoxication]. / Rol' mediatorov v kolichestvennykh i kachestvennykh izmeneniiakh kishechnogo soderzhimogo u krolikov pri éksperimental'noi kholernoi intoksikatsii.

Experimental cholera intoxication caused in 40 rabbits (control--40 rabbits) by intravenous injection of cholerogen was accompanied by disturbance of the mediator balance in the blood plasma and the intestinal wall, chiefly in the samll intestine. Against the background of an increased catecholamine content in the intestinal wall the amount of fluid containing mostly the sodium and potassium bicarbonates and chlorides increased in the lumer of its corresponding sections. The detected regularity possibly served as one of the pathogenetic factors in the mechanism of fluid accumulation in the intestine under the effect of cholerogen.

[Several features of the antigenic structure of Bdellovibrio bacteriovorus]. / O nekotorykh osobennostiakh antigennoi struktury Bdellovibrio bacteriovorus.

A method of growing Bdellovibrio bacteriovorus (Bdv) based on the use of the host microbe in the state of reduced vital activity permitted to obtain Bdv cultures which could be used for the preparation specific antisera. Immunochemical analysis of 4 Bdv strains showed them to possess individual antigenic components localized in the alpha 2-globulin zone. Testing 17 Bdv strains isolated from natural water bodies showed 11 of them to form precipitation lines with the antisera to 4 Bdv strains.