Out of Commission (video) Boston Children's Hospital Share Print E-Mail Loading video... Caption Dead macrophages (stained blue) don't make good infection fighters, unlike their living kin (green). It turns out macrophages don't need to die in order to release IL-1. Credit Charles Evavold, Boston Children's Hospital Usage Restrictions Please credit Charles Evavold, Boston Children's Hospital. 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.