What is the physiological function of mast cells? - Maurer,M.; Theoharides,T.; Granstein,RD.; Bischoff,SC.; Bienenstock,J.; Henz,B.; Kovanen,P.; Piliponsky,AM.; Kambe,N.; Vliagoftis,H.; Levi-Schaffer,F.; Metz,M.; et al. (Exp Dermatol, 2003)