Arizona labs test marijuana for purity – KTAR.com

Arizona labs test marijuana for purity KTAR.com PHOENIX (AP)- Hunched over a microscope, Steve Cottrell peered at a bud from a plant that is increasingly used as medicine in Arizona and across the nation. He pointed at a computer screen that glowed with a magnified image of the marijuana bud.

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Arizona labs test marijuana for purity – KTAR.com

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