DoustarY.; TroughiR.; HashemiM.; MohajeriD.; MovafaghA. An Experimental Study on Apoptosis in Lymphoid Tissues of SPF Chicken after Avian Influenza Serotypes H9N2 Infection. Asian Pacific Journal of Cancer Biology, v. 2, n. 4, p. 81-84, 25 dez. 2017.