Fig. 4
From: PAX7 is required for patterning the esophageal musculature
Expression of Pax7 in the esophageal musculature at P7 and P21. a–f Longitudinal sections of P7 and P21 Pax7 +/− esophagi were stained with antibodies to Pax7, laminin, and DAPI. Proximal, mid-level (Mid), and TZ regions were analyzed. The greatest number of Pax7+ cells was observed in the TZ at P7, and the numbers diminished in mid and proximal regions. The number of Pax7+ cells is diminished at P21 when proximal-to-distal progression of ME development is complete. g Quantification of Pax7+ cells in proximal (prox), mid, and TZ regions measured as a percentage of total DAPI+ cells in the ME. Bars: 0.2 mm