Figure 1. Identification of PDGFRα⁺ cells and CD56⁺ cells in human skeletal muscle.

(A) Human skeletal muscle sections were stained with antibodies against PDGFRα (green), CD56 (red), and laminin (purple), and counterstained with DAPI (blue). Subsequently, specimens were subjected to H-E staining. Arrows indicate PDGFRα⁺ cells located in interstitial spaces of muscle tissue. Arrowheads indicate CD56⁺ cells residing beneath the basement membrane of myofibers. Scale bar: 10 µm. (B) Human muscle-derived cells were analyzed for the expression of PDGFRα and CD56 by FACS.