1. Pinocytosis by epithelium associated with lymphoid follicles in the bursa of Fabricius, appendix, and Peyer's patches;Bookman;An electron microscopic study. Amer. J. Anat.,1973
2. Gut-associated lymphoepithelial tissue: Bidirectional transport of tracer by specialized epithelial cells associated with lymphoid follicles;Bockman;J. of Reticuloendothelial Soc.,1977
3. Histological and quantitative studies on the postnatal growth of the thymus and the bursa of Fabricius of White Pekin ducks;Hashimoto;Jap. J. Vet. Res.,1976
4. A formaldehyde-glutaraldehyde fixative of high osmolality for use in electron microscopy;Karnovsky;J. Cell. Biol.,1965
5. Ultrastructure of lymphoid organs. An electron microscopic atlas;Olah,1975