Figure 4.

A, B: Proliferation activity in endometriosis lesions with regard to the color categories. A: Proliferation activity in endometrioid epithelium (No significant difference between the different color categories), B: Proliferation activity in endometrioid stroma (Significant difference between the categories “black” and “white”). C, D: Proliferation activity in endometriosis lesions with regard to menstrual cycle. C: Proliferation activity in endometrioid epithelium (Significant difference between the categories “proliferative phase” and “secretory phase” as well as between the categories “proliferative phase” and “no/irregular cycle”), D: Proliferative activity in endometrioid stroma (No significant differences between the cycle categories).