The Isolation and Detection of Haemangiomas Type of ALV-J about Grandparent，Parent and Commercial Layers in a Hyline Brown Chicken Farm
NI Wei;QIN Li-ting;SUN Hong-lei;QU Yue;SUN Mei-yu; GAO Yu-long;YU Hong;WANG Xiao-mei;LIU Si-dang
ACTA VETERINARIA ET ZOOTECHNICA SINICA . 2011, (9): 1341 -1345 .