Micro-FastTrackTM 2.0 mRNA Isolation Kit (Invitrogen)Introduction【 The Micro-FastTrack≒2.0 mRNA Isolation ... Resuspend the cell pellet in 1 ml of Micro-FastTrack≒ 2.0 Lysis Buffer to lyse the cells. ... The remaining RNA is mostly rRNA (80-85% of total) and low-molecular weight RNAs such as tRNA (15-20%