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3 votes
Please help
This too

Please help This too-example-1
User Andrucz
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4.7k points

2 Answers

3 votes
15 and 16 I know because I took this
User Dwarfy
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4.4k points
5 votes
I think your best options here are
15) opioids

16) anabolic steroids

Opioids mimic the natural structure of a neurotransmitter

Anabolic steroids are synthetic testosterone
User Stephen Price
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4.6k points