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Heart sections 6 days following intramyocardial injection demonstrating the presence of NRG in the myocardium in the NRG-HG group only (A). Sections are stained with DAPI (blue), troponin (red), and NRG (green). ELISA performed on peripheral blood quantifying NRG levels 6 days following injection. There was no significant difference in NRG levels between groups (B).
