
Keywords: BrdU; bromodeoxyuridine; Cdk; cyclin-dependent kinase; DAPI; 4â²,6-diamidino-2-phenylindole; DMEM; Dulbecco's modified eagle medium; Myo7a; myosin VIIA; P2; postnatal day 2; Pax2; paired box 2; pRb; retinoblastoma protein; Ptc; patched; Rb1; retinoblas