Figure 7. Identification of PECAM1⁺/CD38⁺ cells in human basal cell carcinomas (BCC).

(A) H&E-stained cryosection of a BCC. (B–D) Confocal microscopy analysis of PECAM1, CD38 and α-SMA expression in two BCC biopsies (B–C, D). (B) Overview (top row) of the highly vascularized PECAM1⁺ stroma. Squares within the merged image indicate the magnified region (lower row). PECAM1^low/CD38⁺ cells are marked (arrowheads). Bars 100 µm (A), 50 µm (B, C), 10 µm (D).