title: RNA-seq of mouse:WM2
design: 1)mRNA enrichment and purification: Oligo dT Selection to enrich the mRNA; 2)RNA fragmentation and cDNA synthesis (second-strand cDNA synthesis with dUTP instead of dTTP); 3)End repair, add A and adaptor ligation; 4)PCR; 5)Circularization and make DNB; 6) Sequencing on DNBSEQ platform