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Volunteers inhale air pollutants to unpack link to dementia
(www.livescience.com)
A community to post scientific articles, news, and civil discussion.
rule #1: be kind
It's definitely the best. Human testing will always be the best method.
But, it's typically extremely unethical.
Definitely not the safest but the method that works.
I would not volunteer no matter how much I got paid though.
It is concerning the circumstances people had that made this seem like an option though.