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Low Temperature Filtration Radiation The Use of Chemical Agents in Control Phenolics Alcohols Halogens Heavy Metals Quaternary Ammonium Compounds Aldehydes Sterilizing Gases Evaluation of Antimicrobial Agent EffectivenessPart Ⅲ Microbial Molecular Biology and Genetics Genes : Structure , Replication ,and Mutation DNA as Genitic Material Nucleic Acid Structure DNA StrutureRNA StrutureThe Organization of DNA in Cells DNA RepblicationPatterns of DNA SynthesisMechanism of DNA Repblication The Genetic CodeEstablishment of the Genetic CodeOrganization of the Code Gene StructureGenes That Code for ProteinGenes That Code for t RNA and rRNA Mutations and Their Chemical BasisMutations and MutagenesisSpontaneous MutationsInduce MutationsThe Expression of Mutations Detectation and Isolation of MutantsMutants Detection Mutants Selection Carcinogenicity Testing DNA RepairExcision RepairRemoval of LesionsPostreplication RepairRebination RepairGenes: Expression and Regulation DNA Transcription or RNA Synthesis Transcription in Procaryotes Transcription in Eucaryotes Protein Synthesis Transfer RNA and Amino Acid Activation The Ribosome Initiation of Protein Synthesis Elongation of the Polypeptide Chain Term