Quality ControlMicrobial Sensitivity TestsAlgorithmsModels, BiologicalComputer SimulationParaffin EmbeddingQuality of LifeFormaldehydePeptide Nucleic AcidsFixativesReproducibility of ResultsQuality of Health CareQuality Assurance, Health CareNucleic Acid ProbesNucleic Acid ConformationNucleic Acid Amplification TechniquesSensitivity and SpecificityRNAQuality Indicators, Health CareDNA