(A) Flow cytometric analysis of NK1.1 expression in TCR−GzmB+ (green), TCRβ+GzmB+ (red) and TCRδ+GzmB+ (blue) cells in wild-type (WT) and 8-week-old PyMT mice.
(B) Flow cytometric analysis of NK1.1 expression and CD1d/PBS-57 tetramer reactivity in TCRβ+ lymphocytes (left), and GzmB expression in TCRβ+NK1.1+CD1d/PBS-57− cells (red) and TCRβ+CD1d/PBS-57+ cells (purple) from pooled mammary glands of 8-week-old PyMT mice. Grey histogram indicates fluorescence minus one (FMO) control.
(C) Flow cytometric analysis of CD4 and CD8α expression in TCRβ+NK1.1+CD1d/PBS-57− lymphocytes from pooled mammary glands of 8-week-old PyMT mice. Numbers in quadrants indicate percentage of cells.
(D) Flow cytometric analysis of PD-1 and NK1.1 expression in TCRβ+CD8α+ cells from pooled mammary glands of WT, 8- and 20-week-old PyMT mice. Numbers in quadrants indicate percentage of cells.
(E) Flow cytometric analysis of CD28, ICOS and CD5 expression among CD8α−NK1.1+ (dark orange), CD8α+NK1.1+ (light orange), CD8α+NK1.1−PD-1− (dotted grey) and CD8α+PD-1+ (black) T cell populations from pooled tumors of 20- to 24-week-old PyMT mice. Solid grey line in histograms indicates fluorescence minus one (FMO) control for each population.
See also Figure S2.