(IMAGE) Kumamoto University Caption An infographic depicting a unique “natural senolytic” or natural senescent cell removal mechanism identified by Japanese researchers, in naked mole-rats, the longest-lived rodent species. They proposed a species-specific mechanism involving activation of INK4a-RB-signaling and serotonin metabolism, which increases intracellular oxidative damage, and causes subsequent death of senescent NMR cells. Credit Yoshimi Kawamura and Kyoko Miura from Kumamoto University, Japan Usage Restrictions Do not reuse without permission License Original 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.