CHEN Jiazhang, ZANG Xuelei, HU Gengdong, QU Jianhong,FAN Limin, SONG Chao. The immune response of GIFT Oreochromis niloticus and its susceptibility to Streptococcus iniae under stress in different ammonia[J]. Ecology and Environment, 2011, 20(4): 629-634.