PCR
参考答案：
多聚酶链式反应，是一种快速的DNA特定片段体外合成扩增的方法。它的反应过程包括高温变性、低温退火和中温延伸三个过程。
A client is being admitted to the labor unit. Because she’s well advanced in labor, the nurse must prioritize the admission questions. Which information is most important to obtain when birth is imminent
A. Duration of previous labor.B. Frequency of contractions.C. Presence of bloody show.D. Expected due dat
太乙金丹功效与作用
