上游充通大警 1.The Exploration of Genes Relies on Key Tools SHANGHAI JIAO TONG UNIVERSITY 实现不同来源DA片段的重组 EcoRI DNA fragments join at sticky ends Sticky end B日8 Booc Sticky end Recombinant DNA实现不同来源 DNA 片段的重组 1. The Exploration of Genes Relies on Key Tools