in vivo By Ivan Suarez Robles 08 Feb, 2011 Latin phrase for ‘in the living’; in the living body of a plant or animal.Related Articles: HTT Promoter Mutation has a Bi-directional Effect on HD Age of OnsetHuntingtin Protein and Protein AggregationDr. Rick MorimotoCholesterol and Huntington's DiseaseThe Huntington's Disease Pipeline