Biological AssayMicrobiological TechniquesLactobacillus caseiSarcinaLactobacillusFolic AcidChloroquinolinolsMethodsAnemia, PerniciousPharmaceutic AidsVitamin B 12PediococcusFormyltetrahydrofolatesTetrahydrofolatesPantothenic AcidCobalt IsotopesNephelometry and TurbidimetryPyridoxineGentamicinsAnti-Bacterial AgentsChromatography, High Pressure LiquidBody FluidsTeicoplaninCephalosporinsBacteriological TechniquesAutoanalysisEnterococcus faecalisFolic Acid DeficiencyRadioimmunoassayTobramycinMicrobial Sensitivity TestsChromatography, LiquidHalf-LifeDrug StabilityReagent Kits, DiagnosticInjections, IntramuscularErythrocytesInjections, IntravenousFluoroquinolonesAnti-Infective AgentsCulture MediaBacteriaDrug Resistance, MicrobialBacillus subtilisTime FactorsEscherichia coliKinetics