Neoplasms, Germ Cell and EmbryonalDysgerminomaEndodermal Sinus TumorGerm CellsTeratomaOvarian NeoplasmsGerminomaOvarySex DifferentiationOogenesisTestisSpermatogenesisTesticular NeoplasmsSpermatozoaSertoli CellsSeminiferous TubulesSpermatogoniaSpermatocytesSpermatidsGonadsSeminomaMeiosisWheat Germ AgglutininsSeminiferous EpitheliumGerm LayersGene Expression Regulation, DevelopmentalGametogenesisOogoniaNuclear Receptor Subfamily 6, Group A, Member 1Cell DifferentiationTooth GermInfertility, MaleCryptorchidismMediastinal NeoplasmsOctamer Transcription Factor-3OocytesRNA-Binding ProteinsOvumImmunohistochemistryCarcinoma, EmbryonalRetroperitoneal NeoplasmsMolecular Sequence DataRNA, MessengerIn Situ HybridizationEmbryo, Nonmammalian