1. Bartoszewicz, W., Michalowski, A., Kozubowski, J.: Arch. Immunol. Ther. exp. (Warsz.) 17, 41 (1969).
2. Clausen, K. P., Bouroncle, B. A.: Blood 34, 179 (1969).
3. Darzynkiewicz, Z., Andersson, J.: Exp. Cell Res. 67, 39 (1971).
4. Dische, Z.: Mikrochemie 8, 4 (1940).
5. Drings, P.: In: Dumonde, D. C.: The role of lymphocytes and macrophages in the immunological response. Berlin-Heidelberg-New York: Springer 1971.