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Nicotine's defensive function in nature.
Steppuhn A, Gase K, Krock B, Halitschke R, Baldwin IT. Steppuhn A, et al. PLoS Biol. 2004 Aug;2(8):E217. doi: 10.1371/journal.pbio.0020217. Epub 2004 Aug 17. PLoS Biol. 2004. PMID: 15314646 Free PMC article.