1. Liddle, G. W., Island, D., and Meador, C. K., 1962, Normal and abnormal regulation of corticotropin secretion in man, Recent Progr. Horm. Res. 18: 125–166.
2. Shields, R., 1977, Gene derepression in tumors. Nature (Lond.)
209: 752–753.
3. Braunstein, G. D., Vaitukaitis, J. L., Carbone, P. P., and Ross, G. T., 1973, Ectopic production of human chorionic-gonadotropin by neoplasms, Ann. Intern. Med. 78: 39–45.
4. Coombes, R. C., Easty, G. C., Detre, S. I., Hillyard, C. J., Stevens, U., Girgis, S. I., Galante, L. S., Heywood, L., Maclntyre, I., and Neville, A. M., 1975, Secretion of immunoreactive calcitonin by human breast carcinomas, Br. Med. J. 4: 197–199.
5. Pearse, A. G. E., 1969, The cytochemistry and ultrastructure of polypeptide hormone-producing cells of the APUD series and the embryologic, physiologic and pathologic implications of the concept, J. Histochem. Cytochem. 17: 303–313.