In one study, the researchers conducted DNA analysis on dust samples taken from mattresses of the two groups of children.
其中一项研究，研究人员提取并分析了这两组儿童床垫中取样的的DNA样本。
Venous blood samples were taken respectively in the two groups to detect the changes of plasma fibrinogen, hematocrit, whole blood viscosity and plasma viscosity.
两组于治疗前、后分别采静脉血检测血浆纤维蛋白原、红细胞压积、全血粘度和血浆粘度的变化。
Methods 32 human salivary ACC paraffin-embedded tissue samples were divided into two groups according to the pathological presence of perineural invasion.
方法根据嗜神经侵袭的病理现象，将32例人涎腺腺样囊性癌（ACC）石蜡组织划分为未见神经侵袭组和存在神经侵袭组。
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