[Light microscopic studies of concanavalin A binding in the choroid plexus epithelium and ependymal cells of the cerebral ventricle and human tumors derived from those tissues].

Histochemical investigations of human choroid plexus with lectins revealed strong cytoplasmic binding of concanavalin A to plexus epithelium, whereas ependymal cells were unstained or only weakly reactive. A similar but less clear-cut staining pattern by concanavalin A was observed with plexus papillomas and ependymomas. A clear discrimination however, between the two tumor types using this method is not possible.