1. Ash, A. S. F., and Tucker, J. F. (1966) Nature (London) 209, 306.
2. Awapara, J., Landau, A. J., Fuerst, R., and Seale, B. (1950) J. Biol. Chem. 187, 35.
3. Bachrach, U. (1970) Ann. Rev. Microbiol. 24, 109.
4. Bachrach, U. (1973) Function of Naturally Occurring Polyamines, Academic Press, New York.
5. Bachrach, U., and Oser, I. S. (1963) J. Biol. Chem. 238, 2098.