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Microphthalmia means little eyes. Around mammals the failure of expression of the transcription factor, MITF (microphthalmia-associated transcription factor), in the pigmented retina prevents this structure from fully differentiating. This successively is the causal agent of the malformation of the choroid fissure of the eye, resulting in the drain of vitreous humor fluid. Forgoing this fluid, a eye fails to enlarge, so a title microphthalmia. [http://www.ncbi.nlm.nih.gov]
A cistron encoding a microphthalmia-associated transcription factor (Mitf) occurs as member of the basic helix-loophelix-leucine zipper (bHLH-ZIP) personal. Waardenburg syndrome nature and severity Two (WS nature and severity Two)within homo is likewise the nature and severity of microphthalmia syndrome. Mutation in MITF gene come thought to exist as responsible this syndrome. A human being MITF cistron is homologous to the mouse MITF cistron (aka mouse mi or even microphthalmia cistron); mouse with mutations in this factor come hypopigmented in their fur.
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