Abstract
The subcellular distribution of several blood group antigens was studied in human major and minor salivary glands by means of a postembedding immunogold staining method. In each gland, antigens were detected as secretory products and as cell surface components. A, B, H and Lewis (a,b,x,y) antigens were found in mucous cells depending on the ABO and secretor status; reactivities were confined to the secretory granules. In serous and ductal cells, both the secretory granules and cell membranes were reactive, but only for H, Le-b and Le-y irrespective of the ABO and secretor status.
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