%0 Journal Article %T Effect of Immunosuppression on Newcastle Disease Virus Persistence in Ducks with Different Immune Status %A Lucy W. Njagi %A Phillip N. Nyaga %A Lilly C. Bebora %A Paul G. Mbuthia %J ISRN Veterinary Science %D 2012 %I Hindawi Publishing Corporation %R 10.5402/2012/253809 %U http://dx.doi.org/10.5402/2012/253809