【简答题】免疫组织化学PAP法的原理是()|免疫组织化学染色APAAP法的原理是()|免疫组织化学染色Envision法的原理是()|免疫组织化学染色SP法的原理是()A. 将亲和素一生物素一过氧化物酶复合物中的亲和素替换为链亲和素,特异性更高B. 利用线状的葡聚糖分子与大量的AP或HRP酶结合,再将葡聚糖一酶复合物连接到第二抗体上,形成酶一葡聚糖第二抗体复合物,灵敏度高C. 用AP取代PAP法的过氧化物酶...
【单选题】抗原特异性是指原诱导机体产生特异性免疫应答并与免疫应答产物发生专一结合的特性。抗原的这一特异性取决于:()
【判断题】It is Leo Tolstoy who makes Russian Realistic novel a literary genre that ranks in importance with Greek tragedy and Elizabethan drama.
【判断题】免疫组织化学技术是应用抗原与抗体特异性结合的原理,通过化学反应使标记抗体的显色剂显色来确定组织细胞内抗原的存在。
【单选题】Unfortunately empathy cannot be easily learned. Often it takes a personal situation that is filled with tragedy before one can begin to understand how to empathize with others.
A.
say something in a strong way
B.
put oneself in somebody’s shoes
C.
give money and spend time to help people
D.
show that something is particularly important
【单选题】下列收购未税矿产品的单位或个人中,不能成为资源税扣缴义务人的是( )
【单选题】Traditionally, it is believed that a man named _______________ invented tragedy.