Capillary Plexuses in Gastropods stained by the Novikoff Reaction for Thiamine Pyrophosphatase

Abstract

THE vascular system of molluscs is often spoken of as an ‘open’ one, wherein the exact relations of the arterial vessels to the venous system of vessels and lacunar spaces is as yet undetermined. The absence of an endothelium makes detection of the smallest vessels difficult and capillary plexuses as such have not been described in Gastropoda.