Abstract: It is to provide a composition derived from lactic acid bacteria having an anti-allergic effect (an effect of suppressing allergic symptoms such as hay fever) synergistically, and a food product, pet food, etc. containing the composition. It is to prepare a composition having an anti-allergic action, containing Lactobacillus crispatus KT-11 strain, KT-23 strain, or KT-25 strain bacterial cells and viable bacteria, dead bacteria, or a processed product of bacterial cells of other lactic acid bacteria belonging to the genus Lactobacillus, genus Bifidobacterium, genus Leuconostoc, genus Enterococcus, genus Pediococcus, etc. at a biomass-converted ratio of 99:1 to 50:50, preferably 99:1 to 75:25.

Abstract: It is to provide a composition derived from lactic acid bacteria having an anti-allergic effect (an effect of suppressing allergic symptoms such as hay fever) synergistically, and a food product, pet food, etc. containing the composition. It is to prepare a composition having an anti-allergic action, containing Lactobacillus crispatus KT-11 strain, KT-23 strain, or KT-25 strain bacterial cells and viable bacteria, dead bacteria, or a processed product of bacterial cells of other lactic acid bacteria belonging to the genus Lactobacillus, genus Bifidobacterium, genus Leuconostoc, genus Enterococcus, genus Pediococcus, etc. at a biomass-converted ratio of 99:1 to 50:50, preferably 99:1 to 75:25.

Abstract: An object of the present invention is to provide a peptide with superior immuno-enhancing activities, which comprises particular amino acid sequence, and an immuno-enhancing agent comprising such a peptide. The present invention relates to the immuno-enhancing agent comprising a peptide consisting of the following amino acid sequence (I): Q1-SerP-X-SerP-Q2 (I); wherein, SerP represents the phosphoserine residue, X represents one to three of any amino acid residues, and either of Q1 or Q2 dose not exist or neither of them exists, or Q1 and Q2 are independently at least one of any amino acid residue.