Abstract: The present invention provides a method for preparing a clinically applicable, safe and less damaged cardiomyocyte population through a brief and simple procedure from a cell population obtained by induced differentiation of pluripotent stem cells into cardiomyocytes. The present invention relates to a method for preparing a cardiomyocyte population, the method comprising the steps of: (1) inducing pluripotent stem cells to differentiate into cardiomyocytes, (2) bringing a cell population obtained by the induced differentiation into contact with a laminin selected from the group consisting of laminin ?2?1?1, laminin ?2?2?1, laminin ?1?1?1 and laminin ?1?2?1, or a fragment thereof having integrin binding activity, and (3) retrieving cells adherent to the laminin or the laminin fragment.

Abstract: The present invention provides a method for preparing a clinically applicable, safe and less damaged cardiomyocyte population through a brief and simple procedure from a cell population obtained by induced differentiation of pluripotent stem cells into cardiomyocytes. The present invention relates to a method for preparing a cardiomyocyte population, the method comprising the steps of: (1) inducing pluripotent stem cells to differentiate into cardiomyocytes, (2) bringing a cell population obtained by the induced differentiation into contact with a laminin selected from the group consisting of laminin ?2?1?1, laminin ?2?2?1, laminin ?1?1?1 and laminin ?1?2?1, or a fragment thereof having integrin binding activity, and (3) retrieving cells adherent to the laminin or the laminin fragment.