REFERENCES
- Adkins, R. B., Ende, N. & Gobbel, W. G. Surgery (St. Louis). 1967, 62, 1059–1069.
- Frexinos, J., Carballido, M., Llouis, A. & Ribet, A. Amer. J. dig. Dis. 1971, 16, 1065–1074.
- Helander, H. F. J. Vltrastruct. Res. 1964, 10, 160–175.
- Helander, H. F. & Hirschowitz, B. I. Gastroenterology 1972, 63, 951–961.
- Helander, H. F., Sanders, S. S., Rehm, W. S. & Hirschowitz, B. I. pp. 69–88 in Sachs, G., Heinz, E. & Ulrich, K. J. (eds.) Gastric Secretion. Academic Press, New York, 1972.
- Hollander, F. Gastroenterology 1946, 7, 607–614.
- Holle, G., Schauer, A. & Fellner, K. Chir. Gastroent. 1971, 5, 310–317.
- Holländer, H. & Vaaland, J. L. Brain Res. 1968, 10, 120–126.
- Hübner, G., Klein, H. J. & Eder, M. Verh. dtseh. Ges. Path. 1969, 53, 247–253.
- Ito, S. & Schofield, G. C. J. Cell Biol. 1974, 63, 364–382.
- Johnston, D., Humphrey, C. S., Smith, R. N. & Wilkinson, A. R. Brit. J. Surg. 1971, 58, 725–731.
- Johnston, D. & Wilkinson, A. R. Brit. J. Surg. 1970, 57, 289–296.
- Kragelund, E., Amdrup, E. & Jensen, H. E. Ann. Surg. 1972, 176, 656–658.
- Liavåg, I., Roland, M. & Broch, A. Acta chir. scand. 1972, 138, 493–498.
- Myren, J., Burhol, P. G., Berstad, A. & Christensen, O. 5th Scand. Conf. of Gastroent. 1971, 251–255.
- Roland, M., Berstad, A. & Liavåg, I. Scand. J. Gastroent. 1974, 9, 511–518.
- Roland, M., Berstad, A. & Liavåg, I. Scand. J. Gastroent. 1975, 10, 181–186.
- Roland, M., Berstad, A. & Liavåg, I. Scand. J. Gastroent. 1975, 10, 363–367.
- Weibel, E. R. pp. 237–296 in Hayat, M. A. (ed.) Principles and Techniques of Electron Microscopy, Vol. H1. Van Nostrand Reinhold Co., New York, 1973.