猪链球菌4型转录调控因子GalR的生物学特性

孙珂,祝昊丹,何孔旺,王丹丹,周俊明,俞正玉,吕立新,倪艳秀

Biological Characteristics of Transcriptional Regulator GalR in Streptococcus suis Serotype 4

Ke SUN,HaoDan ZHU,KongWang HE,DanDan WANG,JunMing ZHOU,ZhengYu YU,LiXin LÜ,YanXiu NI

表2 BALB/c小鼠致死率和半数致死量

Table 2 Mortality and LD50 in BALB/c mice

菌株 Strain 攻毒剂量 Challenge dose (CFU) 半数致死量 LD50/CFU 2.5×109 5×108 1×108 2×107 SH1510 10/10* 10/10 5/10 0/10 1×108 SH1510ΔGaIR 10/10 9/10 3/10 0/10 1.62×108 NaCl 0/10 0/10 0/10 0/10