Dendritic Cell (A Type of Immune Cell) in a State of Stress Following Silica Exposure (image) CNRS Share Print E-Mail Caption Signs of cell stress are (i) the presence of DNA (shown in blue) -- which is normally confined to the nucleus and mitochondria -- within the cytoplasm and outside of the cell and (ii) activation of the STING pathway accompanied by the formation of punctae (shown in red). Silica crystals engulfed by the cell are visible as translucent grains in the image on the right. Credit David Gosset / P@CYFIC facility / CBM / CNRS Usage Restrictions May only be used with appropriate credit and caption, to report on this research. 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.