Be inhibited using the nucleic acids and pectins intermolecular mutual recognition between the biological and pathological conditions caused by substance thereof which functions in pathological conditions caused by substances of pathogen or allergen group, is attached to a living body.アレルゲングループ、または病原体等の病態起因物質が生体へ付着する際に機能するそれら病態起因物質と生体との間の分子間相互認識をペクチン類や核酸類を用いて阻害する。