hla-a , b , c antigens were present in the basal and lower spinous cells in normal and dysplastic epithelium and in the non-specific keratoses , but in a minority of carcinomas staining was disorganized and absent at the periphery of tumour islands . beta 2m staining was present in the basal and lower spinous epithelial cells in all tissues ;
C0014609
epithelium
C0014597
epithelial cells