To find the role of Treg in maintaining sucessful pregnancies by measuring Treg level in normal pregnancy below 20 weeks, measuring Treg level in miscarriage and comparing the Treg level between normal pregnancy dan miscarriages. RSUPN Dr. Cipto Mangunkusumo, 3dr fl. Obsteric Emergency Dept and Obstetric & Ginecology day clclinic. An observational, non-intervention, comparative cross=sectional …