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Figure 4. Immunostaining of HCN4 and Isl1 in hiPSC-derived cardiomyocytes.
Representative HCN4 and Isl1 staining of day 40 and 60 hiPSC-derived cardiomyocytes. Positive troponin T (TnT) staining verifies the identity of hiPSC-derived cardiomyocytes.