Characterization and Selection of Reference Genes for Real-time Quantitative RT-PCR of Plants Validation of Reference Genes for Quantitative RT-PCR Analysis in Soybean Root Tissue under Salt Stress Normalisation Strategies for Plasma/Serum MicroRNAs Quantitative Analysis Screening of Reference Genes Used in qRT-PCR and Expression Analysis of PheTFL1 Gene in Moso Bamboo Candidate Reference Gene Selection for Quantitative RT-PCR Normalization in Orchardgrass (Dactylis glomerata L.) Root Tissue Cloning and Expression Pattern of Ribosomal Protein S18 Gene in Musca domestica Reference Genes for Real-time Fluorescence Quantitative PCR in Camellia sinensis