Companies hire researchers, license ideas, generate much useful data that aren’t always published, and fund scholarships. Famil￾iarity with the corporate mindset, structure and resources can help you obtain what you need and avoid problems you don’t want. All Companies Are the Same?

实时荧光定量PCR的基本原理（掌握） 实时荧光定量PCR引物和探针的设计（熟悉） 实时荧光定量PCR反应体系和条件的优化（熟悉） 实时荧光定量PCR测定的数据分析（掌握） 临床基因扩增实验室的设置与人员资质要求（了解）

1 靶序列扩增 2 探针序列扩增（自学） 3 信号扩增（自学）

The principle of the polymerase chain reaction (PCR) was first reported in 1971 (Kleppe et al., 1971), but it was only after the dis￾covery of the thermostable Taq DNA polymerase (Saiki et al., 1988; Lawyer et al., 1989) that this technology became easy to use

通过对本章的学习，使学生熟悉临床样本处理的一般原则；常见临床样本的处理方法（血液标本、棉拭子等）。掌握DNA、RNA的分离纯化与质量鉴定。意识到检验前的质量 控制对保证检验结果重要性。同时也要清楚检验前是整个检验环节中最难控制的环节，也是导致检验结果差错最多的环节。 第一节 临床标本的处理 第二节 生物样本分离纯化与质量鉴定

troduce different notations. Some consider “NTP” a general term for deoxynucleotides, but the absence of the letter “d” indicates a ribonucleotide to others. Commercial literature also describes ribonucleotides as “RTP’s.” If the letter “d” is present, the name describes a deoxynucleotide. If “d” is absent, check the literature

What Do You Know About Your Target? The sensitivity needs of your system are primarily determined by the abundance of your target, which can be approximated according to its origin. Plasmids, cosmids, phagemids as colony lifts or dot blots, and PCR products are usually intermediate to high-abundance targets. Genomic DNA is considered an intermediate to low-abundance target. Most prokaryotic genes are present as single copies, while genes from higher eukaryotes

Air Buoyancy Akin to water keeping something afloat, samples can be “lifted” by air, artificially decreasing their apparent weight. This air buoy￾ancy can have a significant effect on smaller samples. Electrostatic Forces Electrostatic charges are almost always present in any environ￾ment, particularly in areas with very low humidity. If there are

This book celebrates the importance of the question; it is not meant to be a collection of facts or procedures. The writing of this book was inspired by 16 years of queries from the research community.The con￾tributors and I have tried to meet two primary objectives:

Over the past decade the variety of hosts and vector systems for recombinant protein expression has increased dramatically. Researchers now select from among mammalian, insect, yeast, and prokaryotic hosts, and the number of vectors available for use in these organisms continues to grow