(IMAGE) Université de Genève Caption Spiny mice (Acomys dimidiatus), a species used to study how hair patterns are organized during embryonic development. Credit © A. Debry & F. Montange Usage Restrictions none License Original 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.