Certain genes playing a key role in specification of pigment cell fates from the neural crest have been well characterized. At the core of melanocyte fate specification is the transcriptional activator microphthalmia-associated transcription factor (MITF; Mitfa in zebrafish).
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Sulfonamide (medicine) Hydrochlorothiazide is a sulfonamide and a thiazide. Furosemide is a sulfonamide, but not a thiazide. Sulfonamide (also called sulphonamide, sulfa drugs or sulpha drugs) is the basis of several groups of drugs. The original antibacterial sulfonamides are synthetic antimicrobial agents that contain the sulfonamide group. Some sulfonamides are also devoid of antibacterial activity, e.g., the anticonvulsant sultiame.