1) YAMANAKA, M., IWAI, H., SAITO, M., YAMAUCHI, C., and NOMURA, T. (1972): Influence of intestinal microbes on digestion and absorption of nutrients in diet and nitrogen retention in germ-free, gnotobiotic and conventional mice. I. Protein and fat digestion and nitrogen retention in germ-free and conventional mice. Jap. J. Zootech. Sci., 43, 272-283.
2) YAMANAKA, M., IWAI, H., SAITO, M., YAMAUCHI, C., and NOMURA, T. (1973): Influence of intestinal microbes on digestion and absorption of nutrients in diet and nitrogen retention in germ-free, gnotobiotic and conventional mice. II. Protein and fat digestion and nitrogen retention in monocontaminated gnotobiotic mice. Jap. J. Zootech. Sci., 44, 380-387.
3) YAMANAKA, M., IWAI, H., SAITO, M., YAMAUCHI, C., and NOMURA, T. (1973) : Influence of intestinal microbes on digestion and absorption of nutrients in diet and nitrogen retention in germ-free, gnotobiotic and conventional mice. III. Protein and fat digestion and nitrogen retention in polycontaminated gnotobiotic mice. Jap. J. Zootech. Sci., 44, 388-396.
4) YAMANAKA, M., IWAI, H., SAITO, M., YAMAUCHI, C., and NOMURA, T. (1972): Influence of intestinal bacteria on apparent biological value of protein in diet. Jap. J. Germfree, 2, 56-60.
5) YAMANAKA, M., TAKAHASHI, H., ISHIHARA, T., IWAI, H., and SAITo, M. (1973) : Nitrogen in the cecum and the kidneys in germ-free, gnotobiotic and conventional mice. Exp. Animals, 22, 257-262.