American Journal of Physiology: Lung Cellular & Molecular Physiology. Jul98, Vol. 19 Issue 1, pL126. 12p. 2 Color Photographs, 5 Black and White Photographs, 1 Diagram, 3 Graphs.
American Journal of Physiology: Gastrointestinal & Liver Physiology. Dec1999, Vol. 277 Issue 6, pG1189. 11p. 1 Black and White Photograph, 2 Diagrams, 9 Graphs.