【单选题】生产单克隆抗体时,在培养液中加入某种试剂能筛选出杂交瘤细胞,因该试剂( )
【单选题】The scientists discovered DNA that _____belonged______to the phone's speaker on each of the phones
【单选题】下列哪种自身抗体又称为PM-1抗体 ( )
【单选题】We ___________ keep the new traffic law and learn how to protect ourselves.A.may. B
A.
36. We ___________ keep the new traffic law and learn how to protect ourselves. A.may.
【简答题】[选做题]在4-1和4-2两题中选答一题. 4-1.补充完成“按权展开式”: ____ 4-2. 某班从甲、乙、丙三名候选人中选举一名学生代表,每张选票上只能选一人或不选.全班50名同学都参加了投票,得票情况如图,则学生乙的得票数是____.
【单选题】下列哪种自身抗体是干燥综合征中最常见的自身抗体 ( )
【简答题】A.They are unimportant and should be disregarded. B.They may give us helpful clues about ourselves. C.Only a trained psychologist can interpret them with success. D.They should never be interpreted li...