FreezingFreeze DryingFreeze FracturingFreeze SubstitutionCryopreservationCryoprotective AgentsCryosurgeryCell CycleFreeze EtchingBlood PreservationSpecimen HandlingIceMenstrual CycleEmbryo TransferTime FactorsAnimal Identification SystemsCell Cycle ProteinsFrostbiteDesiccationReproducibility of ResultsMicroscopy, ElectronAcclimatizationCold TemperatureEstrous CycleRanidaeGlutaral