Nearly 250 kids were treated twice daily for six months. One group of children received a single strain of the probiotic called Lactobacillus acidophilus, one group received a combination of the L acidophilus and Bifidobacterium probiotics, and a third group received a placebo.
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One group received the gift elaborately wrapped with decorative paper and bows.
第一组测试者收到的是用包装纸精心包装的礼品，并带有蝴蝶结。
Two groups received different doses of cladribine and one group received fake pills.
其中两组接受不同剂量的克拉屈滨治疗，另一组接受安慰剂治疗。
One group received the normal hard diet foe rats; the other group received the powder soft diet.
一组喂以标准的硬食，另一组以粉末状软食喂养。
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