Primate Chewing Jammy Rope (IMAGE) University of California - Davis Caption A red-tailed guenon in Bwindi Impenetrable Forest region in Uganda chews on a rope coated in jam, which is a noninvasive saliva sampling technique developed by UC Davis researchers. But flaviviruses are found in the blood and can be difficult to detect in wildlife. Credit (T. Smiley Evans/UC Davis) Usage Restrictions Provide credit. 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.