The experiment was divided into five groups, four experimental groups and a control group.
实验分五组，即四个实验组和一个对照组。
Both groups were told the gels were experimental.
两组的女性都被告知这种凝胶是试验性的。
There was significant difference between experimental and control groups (P< 0. 01).
经统计学分析，两组间差异有极显著性（P＜0．01）。
Methods: Human neuroblastoma was the cell model and were divided into experimental and control groups.
方法：以人神经母细胞瘤株sy5y为细胞模型，分为对照组和加药组。
Methods: Human neuroblastoma was the cell model and were divided into experimental and control groups.
方法：以人神经母细胞瘤株sy5y为细胞模型，分为对照组和加药组。
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