In laboratory tests, the chemical has been linked to a long list of serious health problems in animals.

在实验室的动物实验研究中，这种化学物质和许多严重的健康问题联系在一起。

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Tests showed levels of chromium 6, a chemical that has been shown to cause cancer in laboratory animals, at 20 times the allowable limit.

测试表示了6价铬(一种可以导致动物得癌症的化学物质)的含量，20倍高于允许的含量。

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The team of researchers, led by Dr Anastasis Stephanou, carried out laboratory tests on heart cells which found that a major chemical component of green tea known as epigallocatechin-3-gallate (EGCG) can reduce cell death after a heart attack or stroke.

BBC: NEWS | Health | Green tea 'may protect the heart'

Tests on human cells in the laboratory have also showed the mambalgins have similar chemical effects in people.

BBC: Black mamba venom is 'better painkiller' than morphine