{"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Epithelial membrane antigen (EMA) is a mucin-like glycoprotein that provides barrier function. According to literature, EMA antibody is useful as a pan-epithelial marker for detecting early metastatic loci of carcinoma in the bone marrow or liver. It stains normal and neoplastic cells from various tissues, including mammary epithelium, sweat glands and squamous epithelium."}]}]}