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"Drosophila Fringe (D-Fng) was first identified because of its role in positioning Notch activation in specialized boundary cells along the dorsal–ventral compartment border of the wing. Subsequently, D-Fng and its three vertebrate homologues, Lunatic Fringe (Lfng), Manic Fringe ( Mfng) and Radical Fringe (Rfng),"
http://www.nature.com/nature/journal/v406/n6794/full/406369a0.html
http://www.nature.com/nature/journal/v406/n6794/full/406369a0.html