Statements in which the resource exists.
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pubmed-article:3578766pubmed:abstractTextWe used gas chromatography-mass spectrometry to assay putrescine in minute regions of single rat brains. Acid extraction, partial purification on Amberlite CG 120, and derivatization with pentafluoropropionic anhydride preceded the gas chromatography-mass spectrometry. A moving-needle solventless system and a direct inlet system were also used to increase sensitivity. Putrescine was measured accurately at the picomole level; the mean concentration of this polyamine in five regions of rat brain found by this method was 2.7-3.8 times higher than reported by other researchers.lld:pubmed
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pubmed-article:3578766pubmed:year1987lld:pubmed
pubmed-article:3578766pubmed:articleTitleDetermination of putrescine in brain tissue using gas chromatography-mass spectrometry.lld:pubmed
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