单词:preparative chromatograph
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Erin, let's arrange for Anderson Cooper. Welcome to the podcast. Therapists claim that they can turn gay people straight and the patients who compare the treatment a mental torture. Keep them honest, let's get started. We begin the way Anderson does
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This is Scientific Americans 60-Second Science. Im Sophie Bushwick. Got a Minute? What's the best way to find out if an unknown mixture contains a specific substance, like an environmental contaminant? You could use an expensive, bulky gas chromatogr
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