the grants from Science & Technology Committee of Shanghai Municipality (Grant No. 03DZ14022); the National High Technology Research and Development Program of China (Grant No. 2001AA216081); the National Natural Science Foundation of China for 0utstanding Young Scientists (Grant No. 39925023).
Generation of transgenic mice by DNA microinjection has become one of the most important technologies in studying gene function in vivo. Ran- dom integration of transgene often results in inser- tional mutation which ...