Embryonal Carcinoma Stem CellsCarcinoma, EmbryonalTeratomaTretinoinCell DifferentiationNeoplastic Stem CellsGerm CellsStem CellsNeoplasms, Germ Cell and EmbryonalCarcinomaTesticular NeoplasmsEmbryonic Stem CellsStem Cell TransplantationHematopoietic Stem CellsPluripotent Stem CellsCell Line, TumorAdult Stem CellsTestisCarcinoma, Squamous CellCarcinoma, HepatocellularSpermatogenesisGerminomaSeminoma