1. Albores-Saavedra, J., Rose, G. G., Ibanez, M. L., Russell, W. O., Grey, C. E., Dmochowski, L.: The amyloid in solid carcinoma of the thyroid gland. Staining characteristics, tissue culture, and electron microscopic observations. Lab. Invest. 13, 77?93 (1964).
2. Black, W. C. (III): Enterochromaffin cell types and corresponding carcinoid tumors. Lab. Invest. 19, 473?486 (1968).
3. Braunstein, H., Stephens, C. L.: Parafollicular cells of human thyroid. Arch. Path. 86, 659?666 (1968).
4. Braunstein, H., Stephens, C. L., Gibson, R. L.: Secretory granules in medullary carcinoma of the thyroid. Electron microscopic demonstration. Arch. Path. 85, 306?313 (1968).
5. Carvalheira, A. F., Welsch, U., Pearse, A. G. E.: Cytochemical and ultrastructural observations on the argentaffin and argyrophil cells of the gastrointestinal tract in mammals, and their place in the APUD series of polypeptide-secreting cells. Histochemie 14, 33?46 (1968).