This paper introduces some new progresses in the researches on the tube baby through the ultra-rapid frozen embryo transfer, the first cloned dog in the world, the tissue reengineering technology, the biotechnology making the plant no-producing pollen, the development of the gene-chip, and the tube ovary, etc.

Ultra low temperature-rapid freezing followed frozen substitution without aldehyde or osmium fixation has been investigated as a method for preparing biological specimens.

In order to maintain the freshness,color,deliciousness and flavor of foods,the carbon dioxide fast freezing machine has been developed on basis of liquid carbon dioxide spray refrigerating principle,and food may swiftly pass through the ice crystal band by using this machine.

It means that the fast freezing of this shaft is actual.

The value of frozen section examination in 144 parotid gland tumor cases;