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Different forms of a protein that may be produced from different genes, or from the same gene by alternative splicing.

Definition from: MeSH via Unified Medical Language SystemThis link leads to a site outside Genetics Home Reference. at the National Library of Medicine

The protein products of different versions of messenger RNA created from the same gene by employing different promoters, which causes transcription to skip certain exons. Since the promoters are tissue-specific, different tissues express different protein products of the same gene.

Definition from: GeneReviewsThis link leads to a site outside Genetics Home Reference. from the University of Washington and the National Center for Biotechnology Information

Related discussion in the Handbook

See also Understanding Medical Terminology.

Published: November 30, 2015