1. A. S. Apt, Z. P. Abramova, A. M. Moroz, et al., Byull. Éksp. Biol. Med., No. 5, 78 (1983).
2. V. M. Man'ko, ?T-lymphocyte dependence of proliferation and differentiation of hematopoietic stem cells,? Author's Abstract of Dissertation for the Degree of Doctor of Biological Sciences, Moscow (1983).
3. A. M. Poverennyi, O. V. Semina, T. N. Semenets, et al., Byull. Éksp. Biol. Med., No. 6, 708, (1978).
4. J. W. Goodman and S. G. Shinpock, Proc. Soc. Exp. Biol. (New York),129, 417 (1968).
5. B. I. Lord and R. Schofield, Blood,42, 395 (1973).