1. Leadbetter, E. R., and Foster, J. W., Bact. Proc., 118 (1959);
2. Leadbetter, E. R., and Foster, J. W., Bact. Proc., 118 (1959); Arch. Biochem. Biophys. (in the press).
3. Mason, H. S., “Adv. Enzymol.”, 19, 79 (Interscience, 1957). Hayaishi, S., Rothberg, S., Mehler, A. H., and Saito, Y., J. Biol. Chem., 229, 889 (1957).
4. Hansen, R. W., and Kallio, R. E., Science, 125, 1198 (1957).
5. Rittenberg, D., and Ponticorvo, L., Internat. J. App. Rad. Isotopes, 1, 208 (1956).