PolyChlorinated Biphenyls /
TriNitroToluene /
LySergic acid Diethylamine

potentially deadly chemicals that are better known by their TLAs (three-letter abbreviations)

• PCBs are used in coolants and lubricants (but not in the US)
• TNT is used as an explosive (but not in dentistry)
• LSD is taken as a psychedelic drug (but not by me)

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