Agave Plant and Quid (IMAGE) Desert Research Institute Caption This is an example of A) an agave plant (Agave utahensis var. nevadensis) photographed near Mule Spring Cave in 2016, and B) a quid before DNA extraction (this work). Credit DRI 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.