Agouti Signaling ProteinHair ColorReceptors, MelanocortinReceptors, CorticotropinPigmentationAgouti-Related ProteinIntercellular Signaling Peptides and ProteinsMammalsReceptor, Melanocortin, Type 1alpha-MSHMolecular Sequence DataProteinsMelaninsAmino Acid SequenceBase SequenceGenes, Intracisternal A-ParticleMelanocyte-Stimulating HormonesRodentiaRats, Inbred LECSkin PigmentationMutation