Figure 4From: Downregulation of TGF-beta receptor types II and III in oral squamous cell carcinoma and oral carcinoma-associated fibroblasts Identification of oral CAFs and NFs. The morphological characteristics of CAFs changed significantly compared with what was observed in NFs. CAFs showed positive staining for vimentin and α-SMA and were negative for cytokeratin. The positive control (human normal keratinocytes HaCat) is shown for cytokeratin stain.Back to article page