Chorionic Villus Sampling Joan S. Hogge, MS, W. Allen Hogge, MD, Mitchell S. Golbus, MD  Journal of Obstetric, Gynecologic & Neonatal Nursing  Volume 15, Issue 1, Pages 24-28 (January 1986) DOI: 10.1111/j.1552-6909.1986.tb01363.x Copyright © 1986 AWHONN, the Association of Women's Health, Obstetric and Neonatal Nurses Terms and Conditions

Figure 1 Diagram of the human embryo at approximately six weeks gestation. At the embryonic pole, the villi are numerous and well-formed; at the abembryonic pole, the villi are fewer in number and less well-developed. Journal of Obstetric, Gynecologic & Neonatal Nursing 1986 15, 24-28DOI: (10.1111/j.1552-6909.1986.tb01363.x) Copyright © 1986 AWHONN, the Association of Women's Health, Obstetric and Neonatal Nurses Terms and Conditions

Figure 2 Diagram of the uterus at 10 weeks gestation with biopsy catheter in position. Journal of Obstetric, Gynecologic & Neonatal Nursing 1986 15, 24-28DOI: (10.1111/j.1552-6909.1986.tb01363.x) Copyright © 1986 AWHONN, the Association of Women's Health, Obstetric and Neonatal Nurses Terms and Conditions