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The secretory activity in the subcommissural organ (SCO) of the sheep and cow was examined by means of lectin histochemistry and cytochemistry. Among the various lectins tested. Concanavalin A (Con A) revealed glycoproteins rich in mannosyl residues in the rough endoplasmic reticulum of ependymal
A free sulfhydryl group previously has been shown to be required for carbohydrate binding to the lectin from lima bean (Phaseolus lunatus) (Gould, N. R. and Scheinberg, S. L. (1970) Arch. Biochem. Biophys. 141, 607-613). Modification of this group by sulfhydryl reagents was specifically inhibited by
The binding patterns of electrophoresed polypeptides from homogenates of human frontal lobe, cerebellum, and spinal cord obtained at various stages of development were determined for several lectins with specificities for a wide range of oligosaccharides. A discrete developmental change in the