*3.4. Animals*

BALB/cAJc1 mice were purchased from CLEA Japan, Inc. (Osaka, Japan). IL-5 transgenic mice (C3H/HeN-TgN(IL-5)-Imeg) were developed by our group [18] and were maintained in our animal facility under specific pathogen-free conditions. Mice used in the experiments were all female, and BALB/cAJc1 mice were 8 to 10 weeks of age and IL-5 mice were 8 to 15 weeks of age at the time of the experiments. All experiments were performed under the ethical guidelines of Kochi University. 
