HematocritDependency (Psychology)HemodilutionBlood ViscosityHemoglobinsErythrocyte CountPlasma VolumeErythropoietinAnemiaPolycythemiaErythrocyte VolumeBlood VolumeExchange Transfusion, Whole BloodErythrocytesErythrocyte IndicesBloodlettingHematologic TestsHemoglobinometryErythrocyte AggregationBlood Cell CountTime FactorsIronPlasma SubstitutesOxygenErythrocyte TransfusionBlood Chemical AnalysisReticulocyte CountBlood PressureErythropoiesisBlood Volume DeterminationBlood ProteinsHemorheologyBlood TransfusionRenal DialysisPhlebotomyKidney Failure, ChronicAnemia, NeonatalErythrocyte DeformabilityIsotonic SolutionsAltitudeDehydrationBody WeightSerum AlbuminPlatelet CountHemodynamicsAnemia, HypochromicBlood Flow VelocityHydroxyethyl Starch DerivativesBlood SubstitutesAlgorithmsCapillariesReference ValuesDose-Response Relationship, DrugModels, BiologicalBlood Transfusion, AutologousProspective StudiesPolycythemia VeraFerritinsRecombinant ProteinsCerebrovascular CirculationBlood Loss, SurgicalMicrocirculationEaglesOxygen ConsumptionOsmolar ConcentrationKineticsRegional Blood FlowRegression AnalysisRheologyDogsKidneyVascular ResistanceElectrolytesHydrogen-Ion ConcentrationBlood Specimen Collection