| http://www.w3.org/ns/prov#value | - Thus the expression of ABH antigens is subject to considerable variations on malignant transformation, and its significance is unclear (3).A loss of A and B antigens is observed in most types of carcinomas, such as carcinomas from the buccal epithelium, stomach, proximal colon, pancreas, larynx, lung, endometrium, ovary, prostate, urinary bladder, and breast.
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