1. Atwell, J. L., and Marchalonis, J. J., 1975, Phylogenetic emergence of Immunoglobulin classes distinct from IgM, J. Immunogenet.
1: 367.
2. Avtalion, R. R., Weiss, E., and Moalem, T., 1976, Regulatory effects of temperature upon immunity in ectothermic vertebrates, in: Comparative Immunology (J. J. Marchalonis, ed.), pp. 227–238, Blackwell, Oxford.
3. Baculi, B. S., Cooper, E. L., and Brown, B. A., 1970, Lymphomyeloid organs of amphibia. V. Comparative histology in diverse anuran species, J. Morphol.
131: 315.
4. Bogner, K. H., and Ellis, A. E., 1977, Properties and functions of lymphocytes and lymphoid tissue in teleost fish, Beitr. zur Histopath. Fische
4: 59.
5. Charlemagne, J., and Tournefier, A., 1975, Cell surface immunoglobulins of thymus and spleen lymphocytes in the urodele amphibian, Pleurodeles waltlii Salamanderidae, Adv. Exp. Biol. Med.
64: 251.