Gynaecology & Obstetrics The zone of fibrinoid degeneration where the trophoblast and the decidua meet is known as: A Folds of Hoboken B Nitabuch's layer C Parietal decidua D Chorion 💡 Explanation The zone of fibrinoid degeneration where the trophoblast and the decidua meet is known as: ✓ Correct Answer: B. Nitabuch's layer