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just use the contact form and they will send you a real poster for free

Apparently, not for medical students. This is what their service rep responded:

>For life science research only. Not for use in diagnostic procedures.

I'm not sure how you'd use them for diagnosis. Maybe to check someone's eyesight?

Yup! When I was in college I ordered 3 for me and my biochemistry-majoring roommates. We mounted one of them on the wall right across the toilet.