Western blot of troponin complex protein markers in control and MO 0.9 gestation fetal heart LVs. SDS-PAGE gel image of cTn-T, p-cTn-I, cTn-I, cardiac tropomyosin and cTn-C (A); cTn-T expression (B); p-cTn-I expression (C); cTn-I expression (D); p-cTn-I:cTn-I ratio (E); tropomyosin expression (F); and cTnC expression (G). Means ± sem. (B–D, F, and G, n = 6 control fetal hearts and n = 7 MO fetal hearts, normalized to β-actin expression and E, normalized to relative pan protein expression). *P < 0.05 vs. control.