1. Scherrer, K. and Darnell, J. E., 1962. Biochem. Biophys. Res. Commun. 7, 486–490.
2. Thor, D. E. and Dray, S., 1968. J. Immunol. 101, 469–480.
3. Paque, R. E. and Dray, S., 1970. J. Immunol. 105, 1334–1338.
4. Paque, R. E., 1978. In Methods in Cancer Research (Busch, H., editor) v15, 279–343, Academic Press, Inc. New York.
5. George, M., Vaughn, J. H., 1962. Proc. Soc. Exp. Biol. 111, 514–521.