Home / Products / Lectins and Glycobiology Reagents / Lectins / Psophocarpus Tetragonolobus Lectin I Psophocarpus Tetragonolobus Lectin I PTL I binds with carbohydrate structures containing α-linked N-acetylgalactosamine. Lactose and other β-linked galactosides are poor inhibitors of binding. Tissue staining patterns using this lectin are clearly defined. Stratified squamous epithelium, endothelial cells, and underlying basement membranes of blood vessels are intensely stained with PTL I. Pancreatic zymogen granules are also strongly labeled with the lectin. There are no products matching the selection.