neuromorphogenesis: How Viagra Works The famous blue pill acts on an enzyme that can block erections (by Dwayne Godwin and Jorge Cham) Source: Scientific American
tags: ♦☻♦,
from: https://daggerfencer.tumblr.com/post/176454402430
tags: ♦☻♦,
from: https://daggerfencer.tumblr.com/post/176454402430