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Coulter DE, Swaykus EA, Beran-Koehn MA, Goldberg D, Wieschaus E, Schedl P.Coulter DE, et al.EMBO J. 1990 Nov;9(11):3795-804. doi: 10.1002/j.1460-2075.1990.tb07593.x.EMBO J. 1990.PMID: 2120051Free PMC article.