Detection of c-kit⁺ cells in HF structures. Vertical sections (A-D) or cross-sections (E-H) of freshly isolated vibrissal follicles were stained with anti–c-kit mAb (A-B,E-F) or an isotype-matched control IgG (C-D,G-H). The fields indicated with boxes on the left panels are shown in higher magnifications on the right panels. Arrowheads indicate c-kit⁺ cells, and scales bars represent 250 μm (A,C); 100 μm (E,G); or 50 μm (B,D,F,H). Images shown in this figure are representative of 5 independent experiments.