“…This conclusion seems reasonable considering additional findings by other investigators [8][9][10][11][12][13][14][15]: ABO(H)-and Lewis-antigens are present in the form of glyco-or muco-proteins in secretions (saliva, gastric juice, semen, and sweat) or as glycolipids in the plasma membrane or intracellular structures of RBCs or several kinds of cells in the stomach, intestine, lung, kidney, and pancreas. The immunodeterminants of these antigens are known to be composed of such hexoses and hexosamines as L-fucose, I>galactose, N-acetylgalactosamine, and N-acetylglucosamine, and their vicinal glycols contribute to the PAS-positivity in histochemistry [23].…”