Two Genomics Accidents (IMAGE) Université de Genève Caption Mammals express Fprs in their immune cells (yellow). A first genomic accident led to the expression of an Fpr in olfactory neurons of a rodents' ancestor (dark blue). This was followed by a second accident that occurred in the mouse lineage (light blue). Credit © UNIGE Usage Restrictions None 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.