Someone was leaving behind human faeces on his pavement.

有人竟然在他的路面上留下大便。

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Methods: Taking the human faeces as samples, to precipitate bacteria through PBS cleaning and centrifuge.

方法：以人体粪便为样本，使用PBS多次清洗，离心样品，沉淀粪便中的菌体。

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Objective: Extracting total DNA of intestinal tract bacteria from human faeces to investigate intestinal microflora.

目的：尝试提取人体肠道菌群总dna，为研究肠道菌群结构提供依据。

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The team also recovered 62 coprolites (fossilised faeces), of which 34 were human specimens.

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