The earlier version of print book has 53 references in this chapter. Now, a new reference (54) mentioned below was added in the chapter of both print and online version.

54. Kuroda E, Coban C, Ishii KJ (2013) Particulate adjuvant and innate immunity: past achievements, present findings, and future prospects. Int Rev Immunol 32(2):209–220.

On p. 201, line 14 from top: following text included in print and online

‘(*This is a modified review based on ref. 54)’