KRT7 and carcinoma: Mokhtari Mokhtari M M Safavi Safavi D D Soleimani Soleimani N N Carcinoma of unknown primary origin: application of immunohistochemistry with emphasis to different cytokeratin 7 and 20 staining patterns Carcinoma of unknown primary origin: application of immunohistochemistry with emphasis to different cytokeratin 7 and 20 staining patterns Appl Immunohistochem Mol Morphol Appl Immunohistochem Mol Morphol 2022 2022 30 30 623 623 634 634 10.1097/PAI.0000000000001054 10.1097/PAI.0000000000001054 supplied-pmid 36036642?