Thiomersal does not contain methyl mercury, which is a naturally-occurring compound and whose toxic effects on humans have been well studied.

硫柳汞不含有甲基汞，后者是一种自然产生的化合物，其对人类的有毒影响已得到充分的研究。

youdao

Bisphenol a, a common compound found in many plastics, has been listed as a toxic substance in Canada but is still deemed safe in the U.S..

双酚a，在许多塑料产品中常用的一种物质，现在已经被加拿大写在有毒物质的清单上了，但是，在美国，它仍然被认为是安全的。

youdao

TCDD, the most toxic member of the family, is used as reference compound, and all other dioxins are assigned a toxic potency relative to TCDD, based on experimental studies.

TCDD在这个家族中毒性最强，被用作参照物，所有其它二恶英均根据实验研究确定相对于TCDD的毒性。

youdao

By combining an artist and scientific quest, the two professors at Michigan State University found that a certain type of metal-loving bacteria can transform high amounts of the toxic chemical compound gold chloride from a liquid into solid 24-karat gold.

FORBES: FOCUS: 'Microbial Alchemy' Produces Gold From Toxic Chemical

Praecis Pharmaceuticals, in Waltham, Massachusetts, has crafted a compound dubbed Apan, now in early human tests, which prevents toxic bundles from forming by latching on to them like Velcro.

FORBES: Dirty Minds

"We're now able to get an idea, at a very early stage, which compound will be a good chemical series rather than find out five years later that it is toxic, " says Hargreaves.

FORBES: Laser light shows