Kit (Mmus) Dominant white spotting dominant spotting mast/stem cell growth factor receptor Kit belly-spot Gsfsow3 Steel Factor Receptor Gsfsco5 W Gsfsco1 c-kit proto-oncogene protein Ssm SCO1 Bs SCO5 proto-oncogene tyrosine-protein kinase Kit SOW3 Tr-kit spotted sterile male SCFR CD117 Fdc kit oncogene c-KIT tyrosine-protein kinase Kit proto-oncogene c-Kit gene