1578576 SCC squamous cell carcinoma 15657 1863918 SCC-Ag squamous cell carcinoma antigen 330 3413975 SCCA squamous cell carcinoma antigen 260 2484262 SCC antigen squamous cell carcinoma antigen 5 2187490 SCCA mRNA squamous cell carcinoma antigen 1 2168666 SSC-Ag squamous cell carcinoma antigen 1 3484881 SSCA squamous cell carcinoma antigen 1