1. Hershfield, V., Boyer, H. W., Yanofsky, C., Lovett, M. A., and Helinski, D. R., 1974, Plasmid ColEl as a molecular vehicle for cloning and amplification of DNA, Proc. Natl. Acad. Sci. USA 71:3455–3459.
2. Davis, M. G., and Calvo, J. M., 1977, Relationship between messenger ribonucleic acid and enzyme levels specified by the leucine Operon of Escherichia coli K-12, J. Bacteriol. 131:997–1007.
3. Panasenko, S. M., Cameron, J. R., Davis, R. W., and Lehman, I. R., 1977, Five hundredfold overproduction of DNA ligase after induction of a hybrid lambda lysogen constructed in vivo, Science 196:188–189.
4. Beppu, T., Nishimori, K., Kawaguchi, Y., Uchiyama, H., and Uozumi, T., 1980, Cloning of cDNA of calf prorennin in Escherichia coli, VI International Fermentation Symposium, London, Ontario, Canada, Abstract, p. 179.
5. Clot dissolving enzyme made by gene splicing, 1980, Chem. Eng. News, April 14, p. 6.