Germ CellsClone CellsNeoplasms, Germ Cell and EmbryonalTestisSpermatogenesisTesticular NeoplasmsGerminomaSpermatozoaSertoli CellsSpermatogoniaSeminiferous TubulesSpermatocytesSpermatidsGonadsSeminomaMolecular Sequence DataMeiosisBase SequenceWheat Germ AgglutininsSeminiferous EpitheliumOogenesisDysgerminomaOvaryGene Expression Regulation, DevelopmentalCloning, MolecularGerm LayersGametogenesisTeratomaAmino Acid SequenceEndodermal Sinus TumorOogoniaRNA, MessengerCell DifferentiationSex DifferentiationNuclear Receptor Subfamily 6, Group A, Member 1Tooth GermInfertility, MaleCryptorchidismOocytesMediastinal NeoplasmsOctamer Transcription Factor-3ImmunohistochemistryDNA, ComplementaryRNA-Binding ProteinsOvumCarcinoma, EmbryonalIn Situ HybridizationDNARetroperitoneal NeoplasmsMutationEmbryo, NonmammalianEmbryo, MammalianCaenorhabditis elegansSperm CountSex Determination ProcessesDrosophila ProteinsStem Cells