The flow cytometry analysis of leukocytic infiltrate in tumours revealed that the cellular composition was mostly similar between the groups (Fig. 3a–c); however, Treg were increased in the BPA-exposed group (Fig. 3d,e), comprising a 13.93% (CI 10.06, 17.79) of CD4+ lymphocytes when compared to 7.82% (CI 5.77, 9.87) and 7.33% (CI 3.81, 10.85) in intact and vehicle groups, respectively. Here, CD4 is linked to neoplasm.