1. Al-Saadi, A.: Precursor cytogenetic changes of transplantable thyroid carcinoma in iodinedeficient goiters. Cancer Res.23, 739?745 (1968).
2. Atkin, N. B., andH. P. Klinger: The superfemale mole. Lancet1963 II, 727?728.
3. DiPaolo, J. A.: Chromosome patterns in mouse lung tumors. J. nat. Cancer Inst.34, 337?343 (1965).
4. ?B. Messier, andT. S. Hauschka: Chromosome constitution of thyrotrophic pituitary tumors in relation to autonomy. Acta Un. int. Cancr.20, 1343?1346 (1964).
5. Hauschka, T. S.: The chromosomes in ontogeny and oncogeny. Cancer Res.21, 957?974 (1961).