Cardiac differentiation of hiPSCs. (A) Immunostaining of hiPSC-derived cardiomyocytes generated from CPCs, demonstrating expression of α-sarcomeric actinin (α-SA) and connexin 43 (Cx43). (B) Real-time RT–PCR data on expression of the indicated cardiac-specific genes in hiPSC-derived cardiomyocytes of both somatic cell origins (CPC- and Fib-hiPSC-derived cardiomyocytes).