Caloplaca lichens (image) Emory Health Sciences Share Print E-Mail Caption Parietin is a dominant pigment in Caloplaca lichens. Winship Cancer Institute researchers have shown that it also has anticancer activity. Credit Courtesy of www.aphotofungi.com Usage Restrictions Non-commercial only, please credit www.aphotofungi.com 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.