Abstract: To convert directly from a somatic cell into a cell having the ability to form stratified epithelial tissue that can act as outer skin of the body, a method for producing a cell having the ability to form stratified epithelial tissue is provided, the method including the step of introducing into a somatic cell at least one gene expressed relatively strongly in a cell having the ability to form stratified epithelial tissue.

Abstract: The present invention relates to a cell culturing method and kit. More specifically, it relates to a cell culturing method and kit using a support that is exposed to the air. It further relates to a method of culturing cells by allowing them to migrate onto a porous polyimide film.

Abstract: The present invention disclosed a method for preparing of collagen having regeneration and repair effects from Wharton's Jelly mesenchymal stein cells, comprising steps of culturing the Wharton's Jelly mesenchymal stein cells in a first medium for 16 to 24 hours; replacing the first medium with a second medium for culturing the Wharton's Jelly mesenchymal stein cells for 36 to 48 hours; collecting the Wharton's Jelly mesenchymal stein cells and adding a cell lysis solution to lyse the Wharton's Jelly mesenchymal stein cells for 0.5 to 2 hours, adding an inorganic salt solution to the cell lysis solution to obtain a mixing solution for further incubation at 4° C. for 24 to 48 hours; centrifuging the mixing solution and collecting a sediment, dissolving the sediment by a preservation solution to obtain a collage.