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Immunophenotypic analysis of ex vivo expanded cardiac atrial appendage stem cells ( CASC s). Long‐term in vitro expanded CASCs (P4–P9) displayed continuous stable phenotype with expression of CD105, CD73, CD29, CD90 and CD55, while lacking CD106, CD117, CD34 and CD45. N ≥ 3 at each passage for each antigen marker.
