Smoker_Lung_TRM (IMAGE) Walter and Eliza Hall Institute Caption This immunofluorescence image shows the presence of a specific subset of T cells (tissue-resident memory T cells, TRM) in the lung of smoker patients. The TRM cells are represented here in aqua and red, the lung airways are depicted in pink, and the cell nuclei are depicted in dark blue. Credit WEHI Researchers Usage Restrictions Free to share for content related to this research. Must 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.