Abstract
Tubular aggregates of glandular epithelial cells (gland fragments) were isolated from human endometrium by collagenase digestion of surrounding stroma, thus exposing the basal surfaces of the cells. Using these aggregates as immunogen, monoclonal antibodies could be derived that recognized basally located antigens. One such antibody, G71, is described, that binds to a basal epithelial cell antigen present in a variety of human epithelia. Epitope-bearing molecules in the range M r 60 000–180 000 are present in two of the tissues studied, amnion and endometrium. The epitope is associated with areas of epithelial cell-extracellular matrix contact.
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