1. Donnellan, W. L. 1965. The structure of the colonic mucosa. The epithelium and subepithelial reticulohistiocytic complex. Gastroenterology 49: 496-514.
2. Gebert, A., Rothkoette, H. J. and Pabst, R. 1996. M cells in Peyer's patches of the intestine. Int. Rev. Cytol. 167: 91-129.
3. Highison, G. J. and Low, F. N. 1982. Microdissection by ultrasonication after prolonged OsO4 fixation: a technique for scanning electron microscopy. J. Submicrosc. Cytol. 14: 161-170.
5. Jepson, M. A., Simmons, N. L., Hirst, G. L. and Hirst, B. H. 1993. Identification of M cells and their distribution in rabbit intestinal Peyer's patches and appendix. Cell Tissue Res. 237: 127-136.