摘要： In the midnight i hurry back to office room...get the short instant message from Mr Baoa big possible job... this evening i have done an english family tutor like every common Saturday...my student ... 阅读全文

摘要： http://mmbr.asm.org/cgi/content/full/62/2/434 An essential feature of bacterial plasmids is their ability to replicate as autonomous genetic elements in a controlled way within the host. Therefore, ... 阅读全文