exon human 78 Humans 72 article 70 priority journal 68 nonhuman 58 Alternative Splicing 52 alternative RNA splicing 48 Animals 46 Exons 44 controlled study 44 promoter region 40 RNA polymerase II 38 genetics 36 messenger RNA 36 Transcription, Genetic 32 fibronectin 32 intron 30 nucleotide sequence 30 unclassified drug 30 RNA Polymerase II 26 transcription regulation 26 Article 24 RNA 24 RNA splicing 24 chromatin 24 chromatin structure 24 male 24 metabolism 24 Chromatin 22