CD4 and endometriosis: We found that in women with endometriosis, the relative abundance of Th2 (CD4+/GATA3+) cells was significantly higher (1.7 times, p = 0.0005) than in controls, whereas the levels of Th1 (CD4+/T-bet+) cells and Th17 (CD4+/Rorγ+) cells did not differ between patients and controls (Fig. 3a).