VACCINE PREPARATIONS CONTAINING SAPONINS

摘要

The present invention provides an adjuvant comprising, as an active ingredient, a saponin compound having a presenegenin skeleton substituted with a substituted or unsubstituted sugar residue at position 28, and provides the vaccine preparation comprising the adjuvant. For example, sufficient immunological stimulation can be attained even in the intranasal inoculation by utilizing the saponin having the structure shown below. <CHEM> <IMAGE>