<;P>;PROBLEM TO BE SOLVED: To provide a new lactobacillus having an immunity activation activity and/or allergy suppression activity and also having gastric juice resistance. <;P>;SOLUTION: This lactobacillus belonging to the Pediococcus pentosaceus or Leuconostoc garlicum is provided by having the immunity activation activity and/or allergy suppression activity and also having gastric juice resistance. The beverages, foods or medicines containing the lactobacilli or the cultured material of the same are also provided. <;P>;COPYRIGHT: (C)2008,JPO&INPIT