Menstrual Cycle, Follicular Phase
Menstrual Cycle, Proliferative Phase
Menstrual Proliferative Phase
Phase, Menstrual Proliferative
Proliferative Phase, Menstrual
The period of the MENSTRUAL CYCLE representing follicular growth, increase in ovarian estrogen (ESTROGENS) production, and epithelial proliferation of the ENDOMETRIUM. Follicular phase begins with the onset of MENSTRUATION and ends with OVULATION.