- 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 System at the National Library of Medicine
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: GeneReviews
from the University of Washington and the National Center for Biotechnology Information
See also Understanding Medical Terminology.