EMA

(redirected from Epithelial Membrane Antigen)
Also found in: Medical, Acronyms.

EMA

Extended Mercury Autocode.

See Autocode.

EMA

(1) (Enterprise Management Architecture) An earlier strategic plan from Digital for integrating network, system and application management. It provided the operating environment for managing a multi-vendor network.

(2) (Electronic Messaging Association, Arlington, VA, www.opengroup.org) A membership organization founded in 1983 devoted to promoting e-mail, voicemail, fax, EDI and other messaging technologies. In 2001, the EMA was folded into The Open Group.
References in periodicals archive ?
The value of epithelial membrane antigen expression in separating benign mesothelial proliferation from malignant mesothelioma: a comparative study.
Epithelial membrane antigen may also be expressed by the tumor cells, but to a lesser extent (Figure 7).
These malignancies do not stain for epithelial membrane antigen (Table).
All cases were negative for epithelial membrane antigen (9 of 9) (11,12,14,16) and placental alkaline phosphatase (4 of 4 cases).
High-level expression of CD23, low-level expression of pan-leukocyte antigen and S-100 protein, and focal expression of epithelial membrane antigen were observed, as well.
2), cytokeratin 7 and 20, epithelial membrane antigen, a-smooth muscle actin, muscle actin, desmin, myoglobin, CD34, CD10, chromogranin A, synaptophysin, and CD117.
Immuno staining was negative for estrogen and progesterone receptors and positive for epithelial membrane antigen.
They are negative for S100 protein (Figure 4), desmin, CD117 (c-Kit; Figure 5), epithelial membrane antigen (EMA), CD31, bcl-2, cytokeratin AE1/3, PGM1, COX-2, h-caldesmon, cyclin D1, CD21, CD23, CD35, and factor XIIIa.
2, S-100 protein, glial fibrillary acidic protein, immunoreactive calcitonin, immunoreactive parathyroid hormone, and epithelial membrane antigen.
Some tumors are reported to be positive for cytokeratin 20, epithelial membrane antigen (Figure 3, B), S100, carcinoembryonic antigen (CEA), CA 19.
The table states that atypical teratoid/rhabdoid tumor is negative for epithelial membrane antigen (EMA); however, this is incorrect in that most of these tumors stain with EMA.
4) Epithelioid sarcoma is a mesenchymal tumor with a predominant epithelial differentiation, showing reactivity for both epithelial and mesenchymal markers, such as cytokeratin, epithelial membrane antigen, vimentin and CD34.