library_construction_protocol: Full-length cDNA libraries were prepared with the SMART-Seqv4 Ultra Low Input RNA kit (TaKaRa) and the libraries for sequencing were prepared using Nextera XT DNA Library Prep (Illumina) according to the manufacturer's instructions. The libraries from 24 samples were sequenced on Illumina NovaSeq6000 sequencing system and generated 50 bp paired end reads (PE50). Libraries from the other 6 samples were sequenced on Illumina HiSeq 2500 SR50 single end reads.