Barry Pittendrigh and Brett Olds, University of Illinois at Urbana-Champaign (image) University of Illinois at Urbana-Champaign Share Print E-Mail Caption University of Illinois entomology professor Barry Pittendrigh (right), graduate student Brett Olds and their colleagues found very few genetic differences between head and body lice. Credit L. Brian Stauffer Usage Restrictions Image may be used only to accompany articles about the research described in this release. Please credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.