157 53. Greaves, M. F. and G. Janossy. 1972. Elicitation of selective T and B lymphocyte response by cell surface binding ligands. Transplant. Rev. 11:87. 54. Greaves, M. F., J. J. T. Owen and M. C. Raff. 1974. T and 13 Lympho cytes: Origins, Properties and Roles in Immune Responses. American Elsevier Publishing Company, Inc., New York, New York. 55. Grey, H. M. 1969. Phylogeny of immunoglobulins. Adv. Immunol. 10:51. 56. Grey, K. M. 1966. Structure and kinetics of formation of antibody in the turtle. In Phylogeny of Immunity. R. T. Smith, P. A. Miescher and R. A. Good, eds. Univ. of Florida Press, Gaines ville, Florida. 57. Han T. and B. Dadey. 1976. T and B lymphocytes. Exclusive role as responders and stimulators in human 'one-way' mixed lymphocyte reaction. Immunol. 31:643. 58. Hartzman, R. J., M. L. Bach, F. H. Bach, G. G. Thurman and K. W. Sell. 1972. Precipitation of radioactivity labeled samples: A semi-automatic multiple-sample processor. Cell Immunol. 4:182. 59. Hildemann, W. H. 1972. Phylogeny of transplantation reactions. In Markers of Biologic Individuality: The Transplantation Antigens. B. D. Kahan and R. A. Reinsfeld, eds. Academic Press, New York. 60. Hildemann, W. H. 1974. Some new concepts in immunological phylogeny. Nature. 250:116. 61. Hildemann, W. H. and E. L. Cooper, 1963. Immunogenesis of homograft reactions in fishes and amphibians. Fed. Proc. 22:1145. 62. Hodgins, H. 0., R. S. Weiser and G. J. Ridgeway. 1967. The nature of antibodies and the immune response in rainbow trout (Salmo gairdneri). J. Immunol. 99:534. 63. Hopping, A. 1923. Seasonal changes in the gases and suga.r of the blood and the nitrogen distribution in the blood and urine of the alligator. Amer. J. Physiol. 66:145. 64. Hsu, C. C. S. W. T. Warthe, P. Hathaway and K. Hirschhom. 1973. The effects of foetiun on lymphocytes: Lymphocyte stimulation property. Clin. Exp. Immunol. 15:427. 65. Jeme, N. K. and A. A. Nordin. 1963. Plaque formation in agar by single antibody forming cells. Science. 40:405. 66. Jondal, M., G. Holm and H. Wigzell. 1972. Surface markers on human T and B lymphocytes I. A large population of lymphocytes form ing nonimmune rosettes with sheep red blood cells. J. Exp. Med 156:207.