Enteric neuroimmunophysiology and pathophysiology 1,2 1The concepts for enteric neuroimmunophysiology in this article emerged, in part, from collaborative work with Professor Helen J. Cooke and several postdoctoral visitors and students in the author’s laboratories (including Fedias Christofi, Thomas Frieling, Jeffrey M. Palmer, Kenji Tamura, Paul R. Wade, Yu-Z. Wang, Yun Xia, Dimiter Zafirov, Hong-Zhen Hu, and Sumei Liu). 2The author is indebted to Professor Gilbert A. Castro of the University of Texas-Houston Health Science Center for introducing the author to the concept of a common mucosal immune system and for sending Jeffrey M. Palmer to the author for postdoctoral training in the early 1980s.