Biology, 28.01.2020 00:31, ayoismeisalex

Juan cut his finger on a piece of glass. after a short time, he felt no pain in his finger. juan's pain was likely reduced by a natural pain reliever in his brain. this natural pain reliever is the neurotransmitter(s):

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Juan cut his finger on a piece of glass. after a short time, he felt no pain in his finger. juan's p...