mRNA剪切 Splicing An overview Splicing removes introns from a primary transcript Dystrophin gene RNA-like 3 strand DNA 翻輯■ 5 Template mb 1.0 1.5 2.02.5 strand Exon Intron Transcription Primary 5'Iil 計〓n計■3 transcript 2.500.000 nucleotides RNA splicing mRNA 5 3 14.000 nucleotidesmRNA剪切