Abstract: The present invention aims to freeze and store organs or tissues taken from human bodies or animals and after thawing, use the resulting organs or tissues, or cells taken and extracted therefrom for medical treatment. The present invention is characterized in that the organs or tissues taken from human bodies or animals are regenerated through the steps of freezing, storing and thawing; the cells taken from the organs or tissues undergo cell division and colonization.

Abstract: A method of defrosting frozen products of the present invention is the method of carrying out microwave heating while reducing the pressure, terminating microwave heating upon detection of a microwave-induced electrical discharge during the microwave heating step, reducing the pressure while microwave heating is in a terminated state to a pressure level at or below a sublimation pressure level to generate sublimation on the frozen products, returning the pressure to a prescribed pressure level to enable microwave heating to be restarted, and repeating the steps from the microwave heating step through the pressure returning step a prescribed number of times.

Abstract: A defrosting method and apparatus for defrosting frozen food products which is based on a pressure reducing chamber in which the frozen food products are placed for defrosting; a vacuum pump for reducing the pressure in the pressure reducing chamber to a pressure level at or below the sublimation pressure of said frozen food products; a microwave heating unit; and a support jig for supporting said frozen food products.