Primary data can be collected in four ways; observation, focus groups, surveys and experiment.
收集初级资料的方法有四种：观察、专题讨论、问卷调查和实验。
During observation, serious adverse bee venom reactions and obvious damage to liver and kidney function were unfound in the two groups patients.
观察期间两组均未发现蜂毒严重不良反应，及肝肾功能明显损害。
Pathological observation: The liver cell injury of the mice is less serious in both large and small dose groups of Gan Xin liquid, especially in large dose group the effect is more obvious.
病理观察：肝欣液大小剂量组小鼠肝细胞损伤性病变较轻，大剂量组病变又轻于小剂量组。
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