1. Anderson, H.R., Dresser, D.W. and Wortis, H.H. (1974) The relationship between the immunoglobulin class of B-cell precursors and the degree of synergism obtained from the presence of T cells. Clin. Exp. Immunol., 16, 393.
2. Blakley, B.R. and Archer, D.L. (1982) Mitogen stimulation of lymphocytes exposed to lead. Toxicol. Appl. Pharmacol., 62, 183.
3. Buckley, R.H. (1976) The functions and measurement of human B and T lymphocytes. J. Invest. Dermatol., 67, 381.
4. Cunningham, A.J. and Szenberg, A. (1968) Further improvements in the plaque technique for detecting single antibody-forming cells. Immunol., 14, 599.
5. Eisen, H.N. (1974) Immunology, Harper and Row Publishers, Hagerstown, MD, 460–512.