Koken Company, Limited

Toshio Taira

Teruo Miyata

Katsutoshi Yoshizato

An artifical skin comprising an insoluble atelocollagen sheet and an epidermal cell layer cultured only on one surface of the sheet, and a method of producing the same are disclosed, which method includes the steps of: forming an insoluble atelocollagen sheet; inoculating epidermal cells only on one surface of the atelocollagen sheet; and suspending the atelocollagen sheet in a liquid culture medium to culture the epidermal cells, thereby forming an epidermal cell layer.

Method of producing an artifical skin

An aqueous atelocollagen solution, which can be injected into living bodies as a medical material, has a pH value in the range from about 6.5 to about 8.0 and an osmolality in the range from about 250 to about 320 mOsm/KgH.sub.2 O, and contains a phosphate buffer solution, or glucose and a phosphate buffer solution, as an agent to adjust pH and osmolality within the ranges specified above. This aqueous atelocollagen solution can be prepared by dissolving atelocollagen in an aqueous acidic solution and adding the above-mentioned pH- and osmolality-adjusting agent to the resulting solution in such an amount as to adjust pH and osmolality of the final solution within the ranges mentioned above.

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Kawasaki, Japan

Toshio Taira