TestisBlood-Brain BarrierRete TestisSpermatogenesisMolecular Dynamics SimulationSertoli CellsCryptorchidismPopulation DynamicsLeydig CellsBlood-Testis BarrierSpermatidsSpermatozoaSpermatogoniaComputer SimulationNonlinear DynamicsSeminiferous EpitheliumModels, BiologicalEpididymisBlood-Retinal BarrierModels, MolecularMolecular Sequence DataSpermatocytesTestosteroneBlood-Air BarrierTesticular DiseasesTight JunctionsTime FactorsTesticular NeoplasmsPermeabilityAmino Acid SequenceCommunication BarriersRNA, MessengerThermodynamicsWaterProtein ConformationOrgan SizeSperm CountGerm CellsBase SequenceInfertility, MaleGenitalia, MaleTissue DistributionOrchitisSexual MaturationSpermatic Cord TorsionKineticsImmunohistochemistryModels, ChemicalScrotumRats, Sprague-DawleyOccludinProtein BindingCapillary PermeabilityMitochondrial DynamicsOrgan SpecificityModels, TheoreticalDiffusionActinsProteinsMotionBlood-Aqueous BarrierReverse Transcriptase Polymerase Chain ReactionBrainMicroscopy, FluorescenceProtein Structure, TertiaryFertilityCells, CulturedMembrane ProteinsSex DifferentiationMutationMolecular ConformationOvaryBiophysicsProtein Structure, SecondaryMicrotubulesGene Expression Regulation, DevelopmentalOrchiectomyMice, Inbred C57BLHydrogen BondingReproductionGene ExpressionDNA, ComplementaryTemperatureZonula Occludens-1 ProteinSeasonsIn Situ HybridizationBinding SitesCell Membrane PermeabilitySex-Determining Region Y ProteinElectric ImpedanceNuclear Magnetic Resonance, BiomolecularFollicle Stimulating HormoneSeminal VesiclesAlgorithmsSignal TransductionStochastic ProcessesGonadsSex Determination ProcessesSequence Homology, Amino AcidBlood-Nerve Barrier