SpermatogenesisTestisSperm CountSperm HeadSpermatidsSpermatocytesInfertility, MaleSeminiferous TubulesSertoli CellsSpermatogoniaSperm CapacitationSpermatozoaSeminiferous EpitheliumSperm MaturationFertilityOligospermiaEpididymisAzoospermiaAcrosomeMeiosisSperm TransportGerm CellsBlood-Testis BarrierContraceptive Agents, MaleSemenTestosteroneSperm Injections, IntracytoplasmicSperm-Ovum InteractionsFertilizationSperm MidpieceLeydig CellsSemen AnalysisProtaminesSemen PreservationCryptorchidismOrgan SizeSperm BanksPachytene StageSpermatogenesis-Blocking AgentsSeminal Plasma ProteinsSperm MotilityFollicle Stimulating HormoneTesticular DiseasesY ChromosomeChromosomes, Human, YEjaculationSexual MaturationZona PellucidaCryopreservationAntispermatogenic AgentsGenitalia, MaleMolecular Sequence DataSertoli Cell-Only SyndromeSeminal VesiclesAsthenozoospermiaSperm TailGene Expression Regulation, DevelopmentalReproductionVaricoceleMeiotic Prophase IVasectomyRNA, MessengerOogenesisGametogenesisSperm WhaleGonadotropinsLuteinizing HormoneDisorders of Sex DevelopmentAmino Acid SequenceInhibinsInseminationImmunohistochemistryHaploidyMice, KnockoutOvumBase SequenceMice, Inbred C57BLInsemination, ArtificialSex ChromosomesReverse Transcriptase Polymerase Chain ReactionHypogonadismKlinefelter SyndromeOocytesPregnancyIn Situ HybridizationAndrogensCyclic AMP Response Element ModulatorSexual Behavior, AnimalRNA-Binding ProteinsX ChromosomeMice, Mutant StrainsGene ExpressionMicroscopy, ElectronReceptors, FSHProteinsReproductive TechniquesSex Chromosome Disorders of Sex DevelopmentCell NucleusOrgan SpecificityInfertility