This antibody recognizes a 200 kD glycoprotein (gp200) localized in the brush border of the proximal renal tebules and the luminal surface of Bowman’s capsule. gp200 was expressed by 93% of primary and 84% of metastatic renal carcinomas. Gp200 glycoprotein is also localized in the breast lobules and ducts, parathyroid glands and epididymis.
