加州斯坦福大学医学院研究人员设计出一种新的多聚酶链反应,它使分子生物学家即使不了解核酸片断两端序列也可用此技术放大片断。科学家用这项新操作可研究极为多样化的分子详细情况,如使细胞分型的受体,这些受体至今尚难于纯化。 Researchers at Stanford University School of Medicine in California have devised a new polymerase chain reaction that allows molecular biologists to amplify fragments without knowing the sequence of the nucleic acid. Scientists can use this new operation to study the very diverse molecular details, such as the receptors that shape cells, which have so far been difficult to purify.