(PhysOrg.com) -- MicroRNAs — one of the tiniest entities in the human genome — are great escape artists. Despite scientists’ best efforts to detect and capture them in different tissues, they often manage to make a getaway, sneaking through the tissues’ tiny holes before anyone can detect them. But now, by adapting a time-tested histological technique, Rockefeller University researchers have scored big: They have developed a new method to capture microRNAs before they disappear. The work will help researchers better understand microRNAs’ increasingly indisputable role in the onset of disease.