Debra Brock, Washington University in St. Louis (image) Washington University in St. Louis Share Print E-Mail Caption This shows research scientist Debra Brock collecting soil samples that might contain wild D. discoideum clones at the biological field station in Mountain Lake, Virginia. The farmer clones were discovered as a result of such sampling. Credit Joan Strassmann Usage Restrictions Please credit 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.