This is a different study than the Imperial College London study. Coincidentally, both were published in Science Immunology. Clonal expansion and activation of tissue-resident memory-like TH17 cells expressing GM-CSF in the lungs of patients with severe COVID-19 https://immunology.sciencemag.org/content/6/56/eabf6692?utm_campaign=SciMag&utm_source=JHubd&utm_medium=Twitter