7Dahm R.Friedrich Miescher and the Discovery of DNA[M/ OL].The Netherlands: Amsterdam, 2004.http: //www.elsevier.com.
8Ullrich A, Shine J, Chirgwin J.Rat insulin genes: construction of plasmids containing the coding sequences[J]. science, 1977, 196 (4296): 1313-1319.
9Chirgwin J M, PrzybylaA E, MacDonal R J, et al. Isolation of biologically active ribonucleic acid from sources enriched in ribonuclease[J].Biochemistry, 1979, 18 (24): 5294-5299.
10Bimboim H C, Doly J.A rapid alkaline extraction procedure for screening reeombinan plasmid DNA [J]. Nucleic acids research, 1979, 7. (6): 1513-1523.