Cd82-positive myocardial precursor cells

The invention, and myocardial progenitor cells that are specifically induced to differentiate into cardiomyocytes, and to provide a method of preparing such myocardial precursor cells. Obtaining a stem cell (a), the step of performing a differentiation induction treatment of cardiovascular system cells to stem cells (b), and from the differentiation induction treatment with stem cells in step (b) CD73, CD44, CD105, CD121a , CD18, and the use of method of preparing at least one CD82-positive cells cell surface markers were sequentially provided with a step (c) separating the CD82 positive cells are negative chosen from CD120a, for use as a myocardial progenitor cells it can be prepared CD82 positive cells.