Lin CM, Jeng CR, Chang HW, Guo IC, Huang YL, Tsai YC, Chia MY, Pang VF. 2008. Characterization of porcine circovirus type 2 (PCV2) infection in swine lymphocytes using mitogen-stimulated peripheral blood lymphocytes from healthy PCV2-carrier pigs. Vet Immunol Immunopathol. 124:355-66.