CentrifugationHypergravityDecelerationGravitationCentrifugation, ZonalGravity, AlteredCountercurrent DistributionAerospace MedicineWeightlessnessAviationAccelerationMicrofilmingSpace FlightWeightlessness SimulationHospital Bed Capacity, 500 and overLaboratories, HospitalMethodsCentrifugation, Density GradientUltracentrifugationMicroscopySucroseHematocritComplex MixturesEquipment DesignTime Factors