Prickly Pear (IMAGE) American Physical Society Caption This is a picture of a prickly pear taken in a front yard in Arizona along with an optical profilometry image revealing the cracks in the epidermis. Credit Image by Konrad Rykaczewski Usage Restrictions CC-BY 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.