免疫组化染色中要减少或消除非特异性染色应（）。 A.延长温育时间 B.适当提高缓冲液 发布时间：2017-05-30 07:31 │ 来源：www.tikuol.com 题型：单项选择题 问题： 免疫组化染色中要减少或消除非特异性染色应（）。A.延长温育时间B.适当提高缓冲液C.进行抗原修复D.增加抗体浓度E.选择特异性高、效价高的第一抗体
题型：单项选择题 完形填空 In the US, when your school doesn't have a bus, and you live too far to walk, you need a carpool(拼车).A carpool is a group of 1 sharing a car to school in the morning. There are 2 four or five kids in their cars. Parents take turns driving the kids in their cars. Teamwork (协作)is really important in the carpool because nobody wants to make 3 late for class. If you sit in the car and wait for a classmate for a long time, you'll probably get a little 4 . Also, your carpool friends might feel the 5 way when you keep them waiting. You learn a great 6 in responsibility(责任)in the carpool before school ever starts.( )1.A. teachers( )2.A. usually ( )3.A. another ( )4.A. angry ( )5.A. different( )6.A. use B. drivers B. hardly B. the otherB. worried B. wrong B. lesson C. students C. already C. the others C. tired C. same C. work 查看答案
题型：单项选择题 中国科学院上海遗传所和复旦大学合作，已培育出5只含有人体某种基因的羊，这些羊的乳汁中含有能治疗血友病的珍贵药物。这一成果的取得利用了当今全球普遍关注的哪项生物技术？[ ]A．转基因技术B．组织培养C．杂交D．克隆技术 查看答案