1. Naspitz, C. H. K., andM. Richter: The action of phytohemagglutininin vivo andin vitro, a review. Progr. Allergy12, 1?85 (1968).
2. Sell, S., andR. Asofski: Lymphocytes and immunoglobulins. Progr. Allergy12, 86?160 (1968).
3. Chalmers, D. G., E. H. Cooper, C. Evans, andN. E. Topping: Quantitation of the response of lymphocytes in culture to specific and nonspecific stimulation. Int. Arch. Allergy32, 117?130 (1967).
4. Coulson, A. S., andD. G. Chalmers: Response of human blood lymphocytes to tuberculin PPD in tissue culture. Immunology12, 417?429 (1967).
5. Caron, G. A.: The effects of the concentration on antigen induced lymphocyte transformationin vitro. Int. Arch. Allergy31, 441?448 (1967).