Bovine leukemia virus-induced persistent lymphocytosis in cattle does not correlate with increased ex vivo survival of B lymphocytes., Dequiedt, F, Cantor G H., Hamilton V T., Pritchard S M., Davis W C., Kerkhofs Pierre, Burny A, Kettmann R, and Willems L , J Virol, 1999 Feb, Volume 73, Issue 2, p.1127-37, (1999)