LGALS3 and endometriosis: The Gal-3 levels were 8.14 ± 3.54 ng/mL in the mild endometriosis group (stages I–II), 6.40 ± 2.56 ng/mL in the severe endometriosis group (stages III–IV), and 4.99 ± 0.99 ng/mL in the control group (Figure 2).