[Basic phospholipase of Naja nigricollis venom].

It is confirmed that N. nigricollis venom contains several phospholipases one of these is a basic phospholipase A. This enzyme is toxic for mice when injected intravenously. In vitro it reacts on egg yolk lecithin producing lysolecithin and prevents the phenomenon of blood clotting. An immunological identity has been established between this basic phospholipase and two acidic phospholipases present in the same venom.