During the treatment, the mRNA levels of IL - 8, MIG and TARC obviously decreased.是什么意思？

During the treatment, the mRNA levels of IL - 8, MIG and TARC obviously decreased.

治疗过程中IL8 、 MIG、TARC的 表达水平有显著下降.

during

prep. 在…的时候，在…期间，当…之时，其间；

例句
...the accrual of funds used during construction.
建设过程中资金的累积

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

treatment

n. 治疗，疗法，处理，待遇，对待；

例句
He was admitted yesterday for treatment of blood clots in his lungs.
他昨天入院治疗肺部的血块。

levels

n. 水平( level的名词复数 )，水平线，水平仪，水平测量；

例句
Victoria Falls has had above average levels of rainfall this year...
维多利亚瀑布今年的降雨量超过了平均水平。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

il

abbr. Israel 以色列；

例句
Objective To explore the correlationship between Arg 130 Gln in the IL - 13 gene and serum totalimmunoglobulin E ( IgE ), IL - 13 levels and aeroallergen.
目的探讨哮喘儿童白细胞介素13 ( IL-13 ) Arg130Gln基因型与血清总IgE 、 IL-13水平及过敏原表型之间的关系.

MiG

abbr. magnesium-inert gas 镁-惰性气体，manufacturing 生产的，metal-inert-gas 金属焊条惰性气体，migrant 移民；

例句
Al - alloys have special requirements on MIG welding due to their unique physical and chemical properties.
铝合金因其独特的物理、化学性能对MIG焊有特殊的要求.

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。

obviously

adv. 明显地；

例句
I thought he was very attractive and obviously very intelligent...
我觉得他魅力非凡，才智过人。

decreased

v. （使）缩短，减小，减少( decrease的过去式和过去分词 )；

例句
The number of independent firms decreased from 198 to 96...
独立公司的数量从 198 个减少到了 96个。