I am trying to find a suitable epithelial cell line to be used as positive control for the markers Uroplakin Ia, Uroplakin II, cytokeratin 7 and Cytokeratin 20. The one currently reported in literature is SV-HUC-1 (ATCC® CRL-9520™) cell line from ureter uroepithelium shows positive expression of UPIa and UPII, however it is also expected to show positivity to CK7 and CK20 too. I am wondering if it is acceptable to use this cell line as positive control to validate expression of those markers for in vitro differentiated adipose derived stem cells into urethral epithelial cells?