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Sex-based differences in protein SNO. Representative 2D CyDye-maleimide DIGE from 4 experiments (4 female nonfailing and 4 male nonfailing hearts). A, Female nonfailing groups were labeled with Cy3-malemide (green). B, Male nonfailing hearts were labeled with Cy5-maleimide (red). C, The overlay of SNO in female and male donor hearts.
