JOURNAL OF ELECTRON MICROSCOPY TECHNIQUE 16:1(1990)
Preface The diverse titles that comprise “Ultrastructure of the Digestive Tract Part I” encompass a wide spectrum of species and integrated ultrastructural techniques, yet the majority of contemporary topics in gastrointestinal morphology await future volumes. Here, the rigorous comparative morphological analysis of specific intestinal cell types, and the ultrastructure of various organelles during epithelial differentiation and seasonal adaptation are explored. Various embedding media in conjunction with cytochemical techniques for the visualization of glycoconjugates or other molecules are evaluated using intestinal cell culture systems and in-
0 1990 WILEY-LISS. INC.
tact tissues. Ultrastructural analyses of epithelial cell extrusion relate to the maintenance of the barrier function of the intestinal mucosa. These articles demonstrate the continued relevance of ultrastructural techniques particularly as part of an interdisciplinary approach in the study of the digestive tract. DAVID A. BARON Searle Research and Development G.D. Searle and Company Skokie, Illinois
Preface The diverse titles that comprise “Ultrastructure of the Digestive Tract Part I” encompass a wide spectrum of species and integrated ultrastructural techniques, yet the majority of contemporary topics in gastrointestinal morphology await future volumes. Here, the rigorous comparative morphological analysis of specific intestinal cell types, and the ultrastructure of various organelles during epithelial differentiation and seasonal adaptation are explored. Various embedding media in conjunction with cytochemical techniques for the visualization of glycoconjugates or other molecules are evaluated using intestinal cell culture systems and in-
0 1990 WILEY-LISS. INC.
tact tissues. Ultrastructural analyses of epithelial cell extrusion relate to the maintenance of the barrier function of the intestinal mucosa. These articles demonstrate the continued relevance of ultrastructural techniques particularly as part of an interdisciplinary approach in the study of the digestive tract. DAVID A. BARON Searle Research and Development G.D. Searle and Company Skokie, Illinois
