Immunohistochemistry of intracellular proteins (specific labelling green, phalloidin red, nuclei blue). α-actinin was detected only in the border zone during TTC (A). After functional recovery a regular distribution was found (B). N-terminal dystrophin showed a decrease in TTC verifying a loss of protein-to-protein interaction (C) in comparison with biopsies after functional recovery (D). C-terminal dystrophin was unaltered in TTC suggesting that integrity of the sarcolemma is maintained (E, F). Connexin-43 showed a reduced cell–cell connection in TTC (G), whereas a myocardial integrity was documented after functional recovery (H).