ban dich giup doan nay cho minh chut nhe Genomic DNA extraction and Polymerase chain reactionPlasma-treated aliquots were precipitated by ethanol with a final concentration of 70% for 5 min and centrifuged at 13 200 g for 10 min to obtain the pellet. Genomic DNA was then extracted from the pellet by Wizard Geno-mic DNA Purification Kit (Promega, Madison, WI, USA) as per manufacturer’s instructions. The amount of DNA was quantified by measuring the absorbance at 260 nm. The genomic DNA ampli... ban dich giup doan nay cho minh chut nhe Genomic DNA extraction and Polymerase chain reactionPlasma-treated aliquots were precipitated by ethanol with a final concentration of 70% for 5 min and centrifuged at 13 200 g for 10 min to obtain the pellet. Genomic DNA was then extracted from the pellet by Wizard Geno-mic DNA Purification Kit (Promega, Madison, WI, USA) as per manufacturer’s instructions. The amount of DNA was quantified by measuring the absorbance at 260 nm. The genomic DNA amplification of conserved bacterial regions, that is, 16S rRNA was performed using the prim-ers listed in Table 1. All reactions were performed with GoTaq Colorless Mastermix (Promega). 25 ll PCR sys-tem was used that contained 12 5 ll Mastermix, 2 ll of each primer (0 2 nmol), 2 ll of genomic DNA as tem-plate (0 2 ng) and sterilized water to make final volume up to 25 ll. Amplification program was conducted as fol-lows: initial denaturation step at 95°C for 5 min, fol-lowed by 25 cycles at 95°C 45 s for denaturation, at 51°C 30 s annealing, at 72°C 90 s extension and 72°C 10 min for final extension
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