Gynaecology & Obstetrics General 94e320c0 Lamellar bodies in amniotic fluid, used to assess fetal lung maturity are derived from A Syncytiotrophoblast B Pulmonary vascular endothelium C Type II pneumocytes D Chorionic epithelium High-Yield Explanation Lamellar body count is rapid, simple and accurate method to assess fetal lung maturity that is comparable to L/S ratio.