IntI 1 integrase gene and class 1 integron marker genes were detected by PCR.是什么意思？

IntI 1 integrase gene and class 1 integron marker genes were detected by PCR.

PCR扩增检测intI1整合酶基因,sul1和qacE△1基因.

integrase

n. 整合酶；

例句
HIV - 1 integrase ( IN ) integrates viral DNA into host cells through two steps metal ions - dependent reactions.
HIV -1 整合酶 ( IN ) 通过依赖金属离子的两步反应将病毒DNA整合入宿主细胞中.

gene

n. <生>基因，遗传因子；

例句
The gene is only part of the causation of illness.
基因只是致病的部分原因。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

class

n. 班，等级，阶级，种类；vt. 把…归入某等级，把…看作（或分类、归类），把…编入某一班级；adj. 很好的，优秀的，出色的；vi. 属于…类（或等级），被列为某类（或某级）；

例句
I'd like to join an aerobics class to improve my fitness.
我想参加有氧运动训练班来增强体质。

marker

n. 标识，标记，记号笔，阅卷人，防守队员，特征；

例句
He put a marker in his book and followed her out.
他在书里夹了一个书签后便随她出去了。

genes

n. <生>基因( gene的名词复数 )；

例句
We could carry that one step further by taking the same genes and putting them into another crop.
我们可以再进一步：取出相同的基因,并将它们植入另一植株。

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

detected

vt. [无]对…检波；v. 发现，发觉，查明( detect的过去式和过去分词 )；

例句
The disease was detected during a routine check-up.
这个病是在做常规体检时查出来的。

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品