Germ CellsNeoplasms, Germ Cell and EmbryonalTestisSpermatogenesisTesticular NeoplasmsSpermatozoaGerminomaSertoli CellsSpermatogoniaSeminiferous TubulesWheat Germ AgglutininsSpermatocytesSpermatidsGonadsSeminomaGerm LayersMeiosisTooth GermOogenesisSeminiferous EpitheliumDysgerminomaGene Expression Regulation, DevelopmentalOvaryGametogenesisTeratomaEndodermal Sinus TumorOogoniaSex DifferentiationCell DifferentiationNuclear Receptor Subfamily 6, Group A, Member 1Infertility, MaleCryptorchidismOctamer Transcription Factor-3OocytesMediastinal NeoplasmsMolecular Sequence DataRNA-Binding ProteinsOvumRNA, MessengerImmunohistochemistryCarcinoma, EmbryonalEmbryo, NonmammalianRetroperitoneal NeoplasmsIn Situ HybridizationCaenorhabditis elegansEmbryo, MammalianBase SequenceSperm CountDrosophila ProteinsStem CellsCaenorhabditis elegans ProteinsBlood-Testis BarrierPachytene StageCell LineageApoptosisDrosophilaPluripotent Stem CellsMutationChoriocarcinomaalpha-FetoproteinsAmino Acid SequenceEmbryonic DevelopmentBleomycinReverse Transcriptase Polymerase Chain ReactionTriticumDisorders of Sex DevelopmentProto-Oncogene Proteins c-kitRNA, Messenger, StoredSex Determination ProcessesMice, TransgenicSex Determination AnalysisGenomic ImprintingTestosteroneChimeraEpididymisMice, Inbred C57BLMesonephromaDrosophila melanogasterOrchitisTranscription FactorsFetusCisplatinTesticular DiseasesTurbellariaIn Situ Nick-End LabelingCell MovementGene ExpressionX ChromosomeFertilityDNA MethylationHaploidyDEAD-box RNA HelicasesDNA-Binding ProteinsZebrafishMeiotic Prophase ICell CountBlastodermMice, KnockoutRetroperitoneal SpaceMice, Inbred Strains