Figure 1: BRG1 and BRM are expressed in the developing and adult epicardium.

(a–i) Immunostaining for BRG1, BRM and Wt1 in mouse E11.5 (a–c), adult (d–f) and adult primed- (+Tβ4), -injured (day 4 post-MI) hearts (g–i). Arrows mark myocardium, arrowheads mark epicardium and double-arrow indicates the expansion of the subepicardial space post-MI. ep, epicardium; my, myocardium; ses, subepicardial space. All scale bars 100 μm.