Oct-3/4 [SEMGC] is a mouse monoclonal antibody that has been reported as a superb nuclear marker of classical seminoma and embryonal carcinoma. Oct-3/4 antibody has excellent sensitivity and specificity for these two tumors and can be effectively used as an aid to screen for these neoplasms when dealing with a metastatic tumor of unknown origin. Studies have shown Oct-3/4 antibody to have a high sensitivity and specificity for carcinoma in situ (CIS) gonadoblastoma and is also useful for the detection of CIS cells in semen.
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