Cancer and Darwinian Fitness (IMAGE) Cell Press Caption This artwork illustrates the idea that anti-cancer protections for organs are influenced by natural selection and Darwinian fitness. Credit Eric Pélatan Usage Restrictions Credit Required. 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.