was centrifuged in a microcentrifuge (Sigma, USA) at 6000 rpm for 10 min. The recovered pellet was resuspended in 100 μl of sterilized DNAse and RNAse-free milliQ
was centrifuged in a microcentrifuge (Sigma, USA) at 6000 rpm for 10 min. The recovered pellet was resuspended in 100 μl of sterilized DNAse and RNAse-free milliQ