Mouse lung endothelial cells, showing AHR expression (IMAGE) The Francis Crick Institute Caption Image of the mouse lung showing endothelial cells lining the blood vessels in red and nuclei of the cells in blue. Air spaces are the dark areas of the image. The cyan and yellow marks show AHR and one of its target genes (Cyp1a1) being expressed in lung endothelial cells. Credit Jack Major, Nature (2023). Usage Restrictions Only use with this story and with associated credit. 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.