Lymphocyte proliferation in bovine leukemia virus-infected dairy cows - Souza, F; Azedo, M; Sakai, M; Kieling, Karin; Weigel, R; Sanches, B; Strincagnolo, C; Blagitz, M; Massoco, C; Della Libera, Alice Maria Melville Paiva (Jubilee World Buiatrics Congress, 2008)