S53 Recent Advances in Mast Cell Research S53-1 A model culture system for cutaneous mast cells S53-2 Lipid network in mast cell biology S53-3 Role of zinc transporter in allergic reaction S53-4 Role of Th17 cells in mast cell-mediated allergy S53-5 Human high affinity IgE receptor, FcεRI β-chain may be a good target molecule for treatment of allergic diseases