Fig. S7

Fig. S7

BMP signaling in regenerating fin osteoblasts is independent of Ihha. (A-L) Images of fin sections from 72 hpa sp7:EGFP and ihha^-/-;sp7:EGFP fish immunostained with Runx2 (white), EGFP (green) and pSmad1/5/8 (red) antibodies. White arrows (E and K) indicate distal Runx2⁺/pSMAD1/5/8^- pObs. Yellow arrows (F and L) denote more proximal Runx2⁺/sp7⁺/pSmad1/5/8⁺ differentiating osteoblasts. Dashed boxes in D and J represent zoom panels shown in E and F (D) and K and L (J). Hoechst-stained nuclei are shown in blue. Dashed yellow lines indicate the site of fin resection. Scale bars: 50 μm.