In clinical trials these substances have killed germs and showed potential in preventing cancer and fighting heart disease.
We have already learned a lot from regulating other substances, such as alcohol and tobacco.
The dangers of Internet-transmitted substance abuse are not limited to Web sites selling the substances.
There are no hard data on how prevalent such substances are, or how harmful.
There are no stories about Verlander going on wild drinking sprees or indulging in banned substances.
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Generally, people naturally dislike tastes of foods that are molding or contain toxic substances.
Substances that cannot cross this barrier are unlikely to make effective treatments for a brain disease.
The American has accepted testing positive but claims he never knowingly used banned substances.
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Erosion, caused by acidic substances, is a wearing away of the enamel coating of teeth.
They're filled with hundreds of gallons of unknown substances and are increasingly difficult to fish out.
They are not to be confused with diamond-like substances such as cubic zirconia and moissanite.
Risk factors include smoking, alcohol, human papillomavirus infection, sun exposure and chewing tobacco or similar substances.
In many instances, the report said, the substances are not yet approved for human use.
Spokesman Tony Whitehead said although unknown, similar substances have been noted in historical records.
It is one of the most lethal substances known, killing by causing acute muscular paralysis.
Toxin analysis has improved but sometimes it is only luck that reveals ingeniously administered substances.
Virtually every professional sport is coming under greater scrutiny for the use of banned substances.
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Those materials vary, and may utilize sand, nitrogen, carbon dioxide, air and other substances.
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Employers are expected to control exposures to hazardous substances and report any cases of occupational asthma.
Like other mysteriously alluring substances, chocolate has from time to time been regarded as an aphrodisiac.
As different federations have different banned substances the testing procedure also varies between the athletes.
Unlike humans, thankfully, the robot won't be (easily) killed by radiation or toxic substances.
These substances are behind Carraguard in the development pipeline, though both have undergone small-scale trials.
The suspect denied all knowledge of the explosive substances in court, according to Spanish media reports.
CFCs are banned under the Montreal Protocol on Substances that Deplete the Ozone Layer.
REACH, reverses the burden of proof, asking industry to demonstrate that substances are harmless.
All sorts of substances will cause cancer if given to rats in large enough doses.
As expected, it is an in vitro look at the affect of these substances on the bacteria.
And lastly, our ability to detect these substances and prevent athletes from using them is pretty bad.
I'm talking about new initiatives like biological passports, random tests, research into new substances and so on.
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