Lab Technician Pipettes Sample (IMAGE) American Society of Agronomy Caption USGS technician Ashley Spoljaric pipettes DNA extracted from beach water samples; the DNA will be analyzed and matched to DNA of potential bacteria sources. Credit USGS. Usage Restrictions Please use with story only. 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.