Sleeping Sickness Parasite's Life Cycle Controlled in the Lab (image) American Association for the Advancement of Science Share Print E-Mail Caption Tsetse fly (Glossina morsitans morsitans), the vector of African trypanosomes. This image relates to a paper that appeared in the Dec. 7, 2012, issue of Science, published by AAAS. The paper, by Nikolay Kolev at Yale School of Public Health in New Haven, Conn., and colleagues was titled, "Developmental Progression to Infectivity in Trypanosoma brucei Triggered by an RNA-binding Protein." Credit [Image courtesy of Geoffrey Attardo, Yale School of Public Health] Usage Restrictions Please cite the owner of the image when publishing. This image may be freely used by reporters as part of news coverage, with proper attribution. Non-reporters must contact Science for permission. 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.