Erythrocyte VolumePlasma VolumeHematocritCentrifugationHypergravityBlood VolumeDecelerationGravitationCentrifugation, ZonalCountercurrent DistributionGravity, AlteredAerospace MedicineWeightlessnessAviationGolgi ApparatusAccelerationCell SizeMicrofilmingSpace FlightErythrocytesWeightlessness SimulationHospital Bed Capacity, 500 and overBlood CellsErythrocyte CountMethodsHypotonic SolutionsHemoglobinsBlood ViscosityHemodilutionTime FactorsLaboratories, HospitalCentrifugation, Density GradientBlood Cell CountErythrocyte IndicesMicroscopyUltracentrifugationSucroseAnemiaOsmolar ConcentrationEquipment DesignErythropoietinWater-Electrolyte BalanceErythrocyte DeformabilityBlood Volume DeterminationPolycythemiaOsmosisChloridesErythrocyte TransfusionOsmotic PressureHypertonic SolutionsHematologic TestsPotassiumLeukocyte CountErythrocyte AggregationIsotonic SolutionsHemoglobinometrySodiumErythrocyte MembraneOsmotic Fragility