Laboratory reagents for research purposes; enzyme and enzyme preparations for research purposes; polymerase chain reaction (PCR) reagents for research purposes; polymerase chain reaction (PCR) enzymes for research purposes; reverse transcriptions enzymes for research purposes; reagent polymerase chain reaction (PCR) master mixes for research purposes; all sold individually or as a kit, for quantitative polymerase chain reaction and quantitative reverse transcription polymerase chain reaction