[Changes in the laboratory rat during development after parenteral administration of the herbicide Zeazin S-40. II. Morphologic findings].

Influence of Zeazine herbicide on different tissues during acute, subacute, and chronic stages was examined, when sublethal doses not exceeding the quantity usually used were applied. Structural changes of lung tissue, specially in short and medium interval resulted, comprising circulatory, and partially regressive changes on alveolocapillary membrane level with special tendency to multiplication of collagenous tissue in the long-term stage, without any tendency to chronical lesion and change of the function.

[Acute changes in the body of laboratory rats during development after the parenteral administration of the herbicide Zeazin S-40. I. Determination of LD50 and other biochemical findings].

On laboratory rats of different age the effect of the acute intraperitoneal administration of the herbicide Zeazin S-40, 570 mg.kg-1 was investigated. The dose was derived after assessment of LD50 i.