Fig. 2.

Phenotype of ovarian TIL. Ovarian TILs were stained with CD3, CD4, CD8 and markers associated with T cell differentiation. a The proportion of CD4⁺ and CD8⁺ lymphocytes in the expanded TIL populations. b Comparison of proportion of CD4⁺ and CD8⁺ lymphocytes in TILs expanded from biopsies taken at primary surgery and following neoadjuvant chemotherapy. c Heterogeneity of CD4:CD8 ratio in TILs expanded from biopsies from different anatomical sites. d Comparison of CD27 and CD28 expression between CD4⁺ and CD8⁺ T cells. e Expression of other T-cell differentiation markers on CD8⁺ and CD4⁺ (f) cells. Data are reported as mean % ± SD. **p < 0.01, unpaired Student’s t test