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A discussion of the development of various soya products in Asia and of their introduction into the western world, specifically of tofu and other fermented soyabean products, is presented. Also, the various nutritive and health-promoting properties of soyabeans and its products are discussed.

Superovulation in mice is most likely to be successful if they are treated at the age of 20-32 days. Both the number of ovulations and the quality of the embryos are significantly better in comparison with superovulated older mice (32-60 days). In this investigation the production of normally developed embryos in young mice of 20-32 days old was 28.7 per superovulated animal and 11.3 or 14.0 in the groups of older mice respectively (32-46 days and 46-60 days).