Protein abundance of phospho‐PLB (B) and Troponin I (C) was increased and decreased, respectively, as a result of LGUN. Values are mean ± SEM. *Significantly different from control fetuses (P < 0.05). AU, arbitrary units. Control, open bars/circles (n = 6); LGUN, filled bars/circles (n = 8); MNE, mean normalized expression.