Different Alleles of the TEP1 Gene (IMAGE) European Molecular Biology Laboratory Caption These microscopy images show that, in mosquitoes, the different alleles of the TEP1 gene confer different degrees of resistance to malaria: the midgut of a mosquito whose only functional allele is the "resistance" one (left) contains a number of dead malaria parasites (black dots), but very few live parasites (fluorescent green dots), whereas in another, genetically identical, mosquito with only the "susceptibility" allele turned on (right), parasite survival was much higher. Credit INSERM Usage Restrictions EMBL press and picture releases including photographs, graphics, movies and videos are copyrighted by EMBL. They may be freely reprinted and distributed for non-commercial use via print, broadcast and electronic media, provided that proper attribution to authors, photographers and designers is made. High-resolution copies of the images can be downloaded from the EMBL web site: <A HREF="http://www.embl.org">www.embl.org</A> License Licensed content 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.