Northern 前面是否用冠词的问题 northern 是形容词，它前面是否用冠词原则上与它后面所修饰的名词有关。 (1) 其前用冠词，是因为其后修饰的名词需要冠词修饰： the. 英国是一个联合王国，由大不列颠（great britain）和北爱尔兰（northern ireland）组成。 gb是包含在uk之内的。 3、使用场合不同 uk（united kingdom）是英国最为正式的名称。 用在. Northern blot 实验为什么要做内参对照内参通常选择18s rrna，28s rrna，或者u6 snrna，一方面起阳性对照的作用，另一方面这些内参基因表达量比较均一。你在比较不同样本的目的带是.
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