Ensembl provides information like for a given gene, there will be several transcripts, which lead to several protein products. beacuse of alternative splicing, several proteins(isoforms) can be obtained from a single gene. I wanted to map the different isoforms of a gene to different tissues. Ex: If a gene, has 3 isoforms, liver might expressing only one of the isoform, and brain and muscle will be expressing other isoforms. Is there any database available which provides tissue specific information about isoforms expression