Thaiwong, T., Leetheraprasert, C., Winyoonunthakul, C., Rungsipipat, A., Wangnaitham, S. and Thanawongnuwech, R. 2015. THE DETECTION OF IFN-γ POSITIVE CELLS IN THE LYMPHOID TISSUES OF PRRSV-INFECTED PIGS USING DIFFERENT STRAINS, FOR INFECTION. The Thai Journal of Veterinary Medicine. 34, 2 (Jul. 2015), 57–68.