8[1]Summers D K. The Kinetics of Plasmid Loss [J]. TIBTECH, 1991, 9: 273-278.
9[2]Ryu D D Y, Lee S B. Development and Optimization of Recombinant Fermentation Processes [A]. Aiba S. Horizons of Biochemical Engineering [C]. Oxford: Oxford University Press, 1988.97-124.
10[3]Horn U, Krug M, Sawistowski J. Effect of High Density Cultivation on Plasmid Copy Number in Recombinant Escherichia coliCells [J]. Biotechnol. Lett., 1990, 12: 191-196.
