MIDDLE EAR MUCOSA-LIKE CELL SHEET, PROCESS OF PRODUCING THE SAME AND METHOD OF USING THE SAME
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United States of America Patent
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Issued Date -
Oct 31, 2013
app pub date -
Sep 15, 2011
filing date -
Sep 15, 2010
priority date (Note) -
Abandoned
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Abstract
The purpose of the present invention is to obtain an alternative to a substitute of the mucosa in the middle ear which is engrafted on the surface of the bone in the middle ear, hyperplasia of the granulation tissue and the bone and the development of the fibroblast cell sir the middle ear are suppressed, and to obtain a middle ear mucosa-like cell sheet retaining cilia in the surface layer, comprising culturing nasal epithelium cells on a cell culture substrate coated with a polymer whose hydration force changes within a temperature range of 0 to 80 ° C., wherein the cells are cultured within a temperature range where the hydration force of the polymer is weak, and then changing the temperature to a temperature at which the hydration force is strong to recover the cultured cell sheet.
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