EARLY RESPONSE LATE RESPONSE NCF PGD. Mucus cells (cosin 0 e I型超敏反应的早 期相和晚期相反应 EARI.Y RESPONSE (minutes) LATE RESPONSE (hours) Histamine Vasodilation IA4.TNFa.LTC Increasod endothclial cell adtcsion D Bronchoconsiriction PAF,IL 5,ECF Leukoeyte migration LIC Mucus secretion I且4，L5 Leukocyic activationⅠ型超敏反应的早 期相和晚期相反应