RT Journal Article SR Electronic T1 In vivo imaging with oligonucleotides for diagnosis and drug development JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP iv40 OP iv47 DO 10.1136/gut.52.suppl_4.iv40 VO 52 IS suppl 4 A1 B Tavitian YR 2003 UL http://gut.bmj.com/content/52/suppl_4/iv40.abstract AB Molecular imaging, the science that combines non-invasive in vivo imaging and molecular biology, has begun to use labelled oligonucleotides as radiotracers. Antisense oligonucleotides target gene expression at the RNA level, while aptamer oligonucleotides are designed to hit proteins of interest. Oligonucleotides for imaging cover a large range of applications, from the invention of new contrast agents for diagnosis to exquisite research tools for the development of new drugs.