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Rowan R, Knowlton N.Rowan R, et al. Among authors: knowlton n.Proc Natl Acad Sci U S A. 1995 Mar 28;92(7):2850-3. doi: 10.1073/pnas.92.7.2850.Proc Natl Acad Sci U S A. 1995.PMID: 7708736Free PMC article.
Rowan R, Knowlton N, Baker A, Jara J.Rowan R, et al. Among authors: knowlton n.Nature. 1997 Jul 17;388(6639):265-9. doi: 10.1038/40843.Nature. 1997.PMID: 9230434
Knowlton N.Knowlton N.Proc Natl Acad Sci U S A. 2001 May 8;98(10):5419-25. doi: 10.1073/pnas.091092998.Proc Natl Acad Sci U S A. 2001.PMID: 11344288Free PMC article.
Baker DM, Freeman CJ, Knowlton N, Thacker RW, Kim K, Fogel ML.Baker DM, et al. Among authors: knowlton n.ISME J. 2015 Dec;9(12):2620-9. doi: 10.1038/ismej.2015.71. Epub 2015 May 19.ISME J. 2015.PMID: 25989369Free PMC article.