In July, stool samples confirmed E. coli as the cause of illness, though the exact food source of the bacterium was not confirmed.

今年7月，粪便样本证实病因是大肠杆菌，但病因菌确切的食物来源，还没有得到确认。

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The scientist confirmed the snake was a previously unknown species after conducting a genetic analysis of tissue samples.

在对组织样本进行基因分析后，科学家确认这条蛇是一个此前不为人知的物种。

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The team was led by Dr. Graham Reynolds, from Harvard University, the scientist confirmed the snake was a previously unknown species after conducting a genetic analysis of tissue samples.

该研究小组由哈佛大学的格雷厄姆·雷诺兹博士带队，这位科学家在对组织样本进行基因分析后，确认这条蛇是一个此前不为人知的种类。

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The herbicide was highly potent, and tests of soil samples confirmed that he had applied a liberal amount.

CNN: Auburn U. cutting down poisoned oaks

German supermarket chain Real confirmed Wednesday that samples of a frozen beef lasagna had tested positive for horse meat.

CNN: UK arrests, French investigation in horse meat scandal

Powys council has confirmed that the three samples it tested at BMC were positive for at least 1% horsemeat.

BBC: Horsemeat burger firm supplied by Farmbox claim