Snail Shell Coiling (IMAGE) The Company of Biologists Caption Knocking out one gene in the snail <i>Lymnaea stagnalis</i> reverses shell coiling. In contrast to the wild-type dextral snail (right), a CRISPR-created snail shows sinistral coiling (left). Credit Dr Hiromi Takahashi of the Kuroda laboratory. Usage Restrictions Full attribution is required, and if reporting online a link to dev.biologists.com is also required 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.