Expression and purification of recombinant RTAsThe expression plasmid Pkk223.3-RTA was introduced into E. coli JM 109 by CaCl2-mediated method.是什么意思_Expression and purification of recombinant RTAsThe expression plasmid Pkk223.3-RTA was introduced into E. coli JM 109 by CaCl2-mediated method.在线翻译_英语_读音_用法_例句