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tetrahydrocannabinol
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The chemistry of marijuana
Using saliva to test for marijuana use
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Videos

The chemistry of marijuana
Learn about the chemistry of marijuana and how its potency and safety is determined.
Video: © American Chemical Society (A Britannica Publishing Partner)
Using saliva to test for marijuana use
Saliva testing for cannabis could someday help identify impaired drivers.
Video: © American Chemical Society (A Britannica Publishing Partner)
VIEW MORE in these related Britannica articles: