Fig. 1

Morphological analysis of uninjured and injured muscles upon FSK treatments. A Scheme of FSK administration on DMD rats for a short (4-day) or long (12-day) treatment starting at 2 days post-injury (DPI). FSK was daily administered by IP injection at 25 mg/kg. B, C H&E (B) and SR (SR) on TA harvested at 14 DPI from WT, DMD, DMD treated with FSK short term (FSK S-T) or long term (FSK L–T). Scale bar 20 µm. D Quantification of SR positive area. E Quantification of the number of PDGFRa + cells per mm². F–H Quantifications of FAP proliferation (F), Col I-Col III (G) and αSMA (H) positive area