edf5fb93_ene__Cftr__ENSMUSG00000041301___Biotype
[Name] Cftr-003 [Transcript ID] ENSMUST00000140532 [bp] 838 [Protein] No protein [Translation ID] - [CCDS] - [UniProt] - [RefSeq] - [Flags] Transcript Support Level 1, when transcripts are supported by at least one non-suspect mRNA.The Transcript Support Level (TSL) is a method to highlight the well-supported and poorly-supported transcript models for users. The method relies on the primary data that can support full-length transcript structure: mRNA and EST alignments supplied by UCSC and Ensembl.TSL:1 [Biotype] 
Alternatively spliced transcript that is believed to contain intronic sequence relative to other coding transcripts in a given locus.Retained intron
Ensembl genome browser 81: Mus musculus - Supporting evidence - Gene: Cftr (ENSMUSG00000041301)