Barium chromate, Prussian blue, and cobalt-cobalticyanide can be precipitated in vivo in the endothelium of mesenteric vessels by injection of the appropriate anions into the blood stream, and topical application of the precipitating cations to the exposed mesenteries of mice and frogs. Precipitation in the endothelium occurs in the form of a diffuse fine punctate precipitate, and also as continuous lines demarcating endothelial cell outlines. A striking feature is the frequent occurrence of this type of precipitation in a tapering zone downstream from mural thrombi in the veins.
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Copyright, 1958, by The Rockefeller Institute