Cell Survival and Cell Death, 2e (IMAGE) Cold Spring Harbor Laboratory Press Caption Our intimate connection with life and death is symbolized by the winged hourglass, reminding each of us how time flies swiftly from light into darkness. An instrument so revealing in its duality, the scythe both ends and renews life's circle. Face masks worn by plague doctors during epidemics connect cell death to pathogen defense with living and apoptotic cells at the heart of each practitioner. Credit Illustration created by Giovanni Luchetti, Genentech.) Usage Restrictions None 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.