摘要
The mast cell is an enigmatic cell type whose physiological function has preoccupied large numbers of investigators for decadest. Some have concluded that the absence of mast cells is incompatible with life, at least in humans, because no human conditions have been documented where these cells are absent from the body. On the other hand, mice harboring specific mutations in certain growth factors, or their receptors, that
基金
Supported by the grants from the National Institutes of Health,USA (DK33491 and AT01180) and the Crohn's and Colitis Foundation of America
