Patent ID: 8420392

Claim:
A method for culturing a piece of human periosteum tissue to grow a periosteum sheet, comprising the steps of: (1) subjecting a periosteum piece dissected from a patient to lysis of erythrocytes, washing with saline, and placing on a dry culture dish containing no culture solution; (2) dropping platelet-rich plasma collected from the patient onto the surface of the periosteum piece on the culture dish and coagulating the platelet-rich plasma so as to cover the surface of the periosteum piece, wherein the platelet-rich plasma induces migration of periosteum-derived cells outwardly from the periosteum piece in the culture dish; (3) growing the cells by adding a first culture medium to the culture dish after the step (2), wherein the first culture medium is supplemented with at least one transforming growth factor beta selected from the group consisting of transforming growth factor beta 1, transforming growth factor beta 2, and transforming growth factor beta 3; and (4) growing the cultured cells in a second culture medium containing basic fibroblast growth factor and no platelet-rich plasma, after the step (3); and obtaining the periosteum sheet of an average diameter of about 90 to 100 mm grown around the periosteum piece in 27 days.