对NK细胞描述错误的是()
A.活化后表达Fas
B.可直接杀伤某些肿瘤细胞
C.可间接杀伤某些病毒感染细胞
D.分泌TNF-α
E.具有免疫调节作用
参考答案:A
At higher CO2levels, certain types of plants, such as legumes, are expected to benefit more than others, and the nutritional quality of some crops will likely decline.
根据内生肌酐清除率判定患者为中度肾功能损害,此时可将每日的给药剂量减为正常剂量的()
A.1/2~2/3
B.1/5~1/2
C.1/5~3/5
D.1/10~1/5
E.1/20~1/10