6Yamaki K, Thorlacius H, Xie X, et al. Characteristics of histamine-induced leukocyte rolling in the undis- turbed mierocirculation of the rat mesentery[J]. Br J Pharmacol, 1998,123 (3) :390-399.
7Cho J G,Dee S A. Porcine and respiratory syndrome virus[J]. Theriogenology, 2006,66(3) :655-662.
8Akdis C A,Blaser K. Histamine in the immune regu- lation of allergic inflammation[J]. J Allergy Clin Im- munol,2003,112(1) :15-22.
9Hellstrand K, Hermodsson S. Histamine H2 receptor mediated regulation of human natural killer cell cyto- toxicity[J]. J Immunol, 1986,137 : 656-661.
10Tian K, Yu X, Zhao T, et al. Emergence of Fatal PRRSV Variants Unparalleled Outbreaks of Atypical PRRS in China and Molecular Dissection of the U- nique Hallmark[J]. PLoS ONE, 2007,2(6) : 517-526.
