1. BONNER, D. M. (1955) : Aspect of enzyme formation. Amino Acid Metabolism, p. 193, Johns Hopkins Press, Baltimore.
2. LEDERBERG, J. (1950) : The β-galactosidase of Escherichia coil strain K-12. J. Bact., 60, 381-392.
3. LOWRY, O. H., ROSEBROUGH, N. J., FARR, A. L. & RANDALL, R. J. (1951) : Protein measurement with the Folin phenol reagent. J. Biol. Chem., 193, 265-275.
4. MONOD, J., COHEN-BAZIRE, G. & CORN, M. (1951) : Sur la biosynthese de la β-galactosidase (lactase) chez Escherichia coli: la specificite de l'induction. Biochim. et biophys. acta, 7, 585-599.
5. OKAMOTO, S. (1959) : Mechanism of chloramphenicol resistance in E. coli. I. The drug sensitivity of chloramphenicol-resistant strain of Escherichia toll as determined by the assessment of 50% end points. Jap. J. M. Sc. & Biol., 12, 109-117.