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Cardiomyocytes of adult hearts from mouse in cell culture. (A) Cardiomyocytes 3 hr in culture. (B) Cardiomyocytes 24 hr in culture. (C) Cardiomyocytes 3 days in culture. Cardiomyocytes show a positive α-actinin staining as visualized by incubation with tetramethyl-rhodamine-labeled anti-rabbit IgG antibody. The α-actinin protein is located in the Z discs. Nuclei are stained by 4′-6-diamidino-2-phenylindole (bisbenzimide H 33258; Sigma). Epifluorescence.
