Cell HypoxiaNeuroblastomaAnoxiaCell Line, TumorTumor Cells, CulturedHypoxia, BrainGanglioneuromaOncogene ProteinsApoptosisGenes, mycFetal HypoxiaNeuronsCell LineHypoxia-Inducible Factor 1, alpha SubunitTretinoinCell DifferentiationCell SurvivalOxygenRNA, Messenger3-IodobenzylguanidineGene Expression Regulation, NeoplasticGangliosidesNeuritesGene AmplificationGanglioneuroblastomaTransfectionNervous System NeoplasmsBlotting, Western