1. Abt, A.B., Carter, S.L.: Goblet cell carcinoid of the appendix. An ultrastructural and histochemical study. Arch. Path. Lab. Med. 100, 301–306 (1976)
2. Ahonen, A., Kyösola, K., Penttila, O.: Enterochromaffin cells and macrophages in ulcerative colitis and irritable colon. Ann. Clin. Res. 8, 1–7 (1976)
3. Albores-Saavedra, J., Larraza, O., Poucell, S., Rodriguez Martinez, H.A.: Carcinoid of the uterine cervix. Cancer (Philad.) 38, 2328–2342 (1976)
4. Allison, D.J., Clay, T.: Angiotensin II release from the hypoxic lobe of the intact dog lung. J. Physiol. (Lond.) 32–33 P (1976)
5. Alpert, L.I., Zak, F.G., Werthamer, S., Bochetto, J.F.: Cholangiocarcinoma. A clinicopathologic study of five cases with ultrastructural observations. Hum. Path. 5, 709–728 (1974)