BTN2A1 and neoplasm: Moreover, we observed an increased expression and co-localization of BTN3A1 and BTN2A1 in P4-treated mice tumor tissue sections (i.e. from P4 and P4 + PTA-Vδ2 group) compared to the non-P4-treated mice tumors (i.e. from PBS and PTA-Vδ2 group) (Figure 4C andFigure S9).