1. Poste, G. and Fidler, I.J., The pathogenesis of cancer metastasis. Nature (London), 283, 139, 1980.
2. Poste, G. and Greig, R., On the genesis and regulation of cellular heterogeneity in malignant tumors, Invasion and Metastasis, 2, 137, 1982.
3. Kerbel, R.S., Implications of immunological heterogeneity of tumors, Nature (London), 280, 358, 1979.
4. Owens, A.H., Coffey, D.S., and Baylin, S.B., Eds., in Tumor Cell Heterogeneity: Origins and Implications. Academic Press, New York, 1982.
5. Eccles, S.A., Macrophages and cancer, in Immunological Aspects of Cancer, Castro, J.E., Ed., University Park Press, Baltimore, 1978, 123.