Mice
Mast cell deficient KitW−sh/W−sh (Sash) mice (on a C57BL/6 background, purchased from Jackson Lab, Cambridge, MA, USA) were housed and bred in the pathogen free animal facilities of The Medical School of the Hebrew University of Jerusalem. C57BL/6 Wild Type (WT) mice were purchased from Harlan Laboratories Inc., Israel.
All murine experiments were approved by the Animal Experimentation Ethics Committee of the Hebrew University of Jerusalem and performed in accordance with the guidelines of the committee.