Gene expression in tonsils in swine following infection with porcine reproductive and respiratory syndrome virus oleh Qian Dong, Joan K. Lunney, Kyu-Sang Lim, Yet Nguyen, Andrew S. Hess, Hamid Beiki, Raymond R. R. Rowland, Kristen Walker, James M. Reecy, Christopher K. Tuggle, Jack C. M. Dekkers