Figure 2.

Protected T cells have increased canonical markers of tissue residency and include CD4⁺ regulatory T cells. (A) Subset composition of representative samples using flow cytometry to identify the phenotype on the basis of CCR7 and CD45RA cell-surface expression as TEM (CCR7⁻CD45RA⁻), TCM (CCR7⁺CD45RA⁻), naive T cells (CCR7⁺, CD45RA⁺), and TEMRA (CCR7⁻CD45RA⁺) from lung biopsy specimens taken at 6 hours of ex vivo lung perfusion. (B) Compiled data showing paired proportion of TEM for both CD8⁺ (top) and CD4⁺ (bottom) T cells