<prompt> Sections from a solid-cytic unilateral ovarian tumor in a 30-year old female show a tumor composed of diffuse sheets of small cells with doubtful nuclear grooving and scanty cytoplasm. No Call-Exner bodies are seen.The ideal immunohistochemistry panel would includeVimentin, epithelial membrane antigen, inhibin, CD99Desmin, S- 100 protein, smooth muscle antigen, cytokeratinChromogranin, CD45, CD99, CD2OCD3, chromagranin, CD 45, synaptophysin  <response>: Tissue was fixed using 10 buffered formalin solution. Five-micrometer sections of formalin fixed paraffin-embedded specimens were cut and immunohistochemical staining was performed using the peroxidase anti-peroxidase method. Fresh citric buffer solution of pH 6 was used for all markers except estrogen receptor ER and Wilms tumor 1 WT1 pH 2.5. Antigen retrieval was carried out using a microwave oven. Next a peroxide block was used to prevent background non-specific staining due to endogenous peroxidases. This was followed by the addition of the primary and secondary antibodies and subsequently the addition of the chromogen, 3,3Diaminobenzidene. Slides were counterstained using H and E, stain. We used a panel of six markers including cytokeratin7 CK7, CK20, carcinoembryonic antigen CEA, cancer antigen 125 CA125, ER and WT1 to differentiate between primary and metastatic ovarian tumors 