Vaginally administered estroprogestinic decreases serum inhibin A and inhibin B levels and reduces endometrial thickness  Stefano Luisi, M.D., Lavinia Estrela Borges, M.D., Lucia Lazzeri, M.D., Ariana dell’Anna, M.D., Filiberto Maria Severi, M.D., Felice Petraglia, M.D.  Fertility and Sterility  Volume 86, Issue 5, Pages 1483-1487 (November 2006) DOI: 10.1016/j.fertnstert.2006.04.032 Copyright © 2006 American Society for Reproductive Medicine Terms and Conditions

FIGURE 1 Serum inhibin A (A), inhibin B (B), FSH (C), and LH (D) levels 8–10 days after the last spontaneous menstrual period (before estroprogestinic administration) and 8–10 days during vaginal ring insertion. Luisi. Vaginal estroprogestinic and inhibins. Fertil Steril 2006. Fertility and Sterility 2006 86, 1483-1487DOI: (10.1016/j.fertnstert.2006.04.032) Copyright © 2006 American Society for Reproductive Medicine Terms and Conditions

FIGURE 2 Serum inhibin A (A), inhibin B (B), FSH (C), and LH (D) levels 8–10 days after the last spontaneous menstrual period (before estroprogestinic administration) and 8–10 days of oral contraceptive administration. Luisi. Vaginal estroprogestinic and inhibins. Fertil Steril 2006. Fertility and Sterility 2006 86, 1483-1487DOI: (10.1016/j.fertnstert.2006.04.032) Copyright © 2006 American Society for Reproductive Medicine Terms and Conditions

FIGURE 3 Endometrial thickness measurement 8–10 days after the last spontaneous menstrual period before vaginal ring insertion and 8–10 days after vaginal ring insertion. Luisi. Vaginal estroprogestinic and inhibins. Fertil Steril 2006. Fertility and Sterility 2006 86, 1483-1487DOI: (10.1016/j.fertnstert.2006.04.032) Copyright © 2006 American Society for Reproductive Medicine Terms and Conditions