Virulence Analysis of PCV2 between Subgenetypes 2a and 2b
LIU Jian, ZHANG Wei-yi, JU Hou-bin, YANG De-quan, WANG Jian, LIU Pei-hong, ZHOU Jin-ping
China Animal Husbandry & Veterinary Medicine . 2013, (2): 23 -27 .