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
Answer is C. Lamellar body count is rapid, simple and accurate method to assess fetal lung maturity that is comparable to L/S ratio.