1. Alexander, J. W., and Good, R. A., Fundamentals of clinical immunology, Saunders, Philadelphia 1977.
2. Alexopoulos, C., and Babitis, P., Age dependance of T lymphocytes. Lancet1 (1976) 426.
3. Andreasen, E., Studies on the thymolymphatic system. Quantitative investigations on the thymolymphatic system in normal rats at different ages, under normal conditions and during inanition and restitution after starvation. Acta path. microbiol. scand. suppl.49 (1943) 1–171.
4. Aschkenasy, A., Role played by thymus atrophy in disorders of immunological reactions to sheep red blood cells and rosette cells in protein-deficient rats. Ann. Immun., Paris124 (1973) 345–362.
5. Bach, J. F., Dardenne, M., and Davies, A. J. S., Early effect of adult thymectomy. Nature New Biol.231 (1971) 110–111.