To look for a good method to producing NGF which has low molecular weight, we designed two projects which are carried out through gene cloning and cell engineering techniques to provide the problem.

为了能寻求一种切实可行及表达高活性小分子ngf的生产途径，我们通过基因工程和细胞工程技术设计了两种NGF的体外重组方案。

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The basic techniques of human embryo creation that Dr. Edwards pioneered form the technical foundation of in vitro fertilization, human cloning techniques, genetic screening of human embryos and embryonic-stem-cell research.

WSJ: Test-Tube Baby Pioneer Robert Edwards Wins Nobel Prize for Medicine