title: Maternal serum alpha fetoprotein concentrations in mid trimester in hepatitis B surface antigen positive and negative subjects.
abstract: Maternal serum alpha fetoprotein (AFP) was measured as part of a routine antenatal screening programme in 48 patients positive for hepatitis B surface antigen (HBsAg). After exclusion of two cases with obvious obstetric abnormalities there was no difference in AFP concentrations between subjects who were positive or negative for HBsAg.
mesh_terms: D005260:Female; D005313:Fetal Death; D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D006801:Humans; D011247:Pregnancy / Q000097:blood*; D011262:Pregnancy Trimester, Second; D000509:alpha-Fetoproteins / Q000032:analysis*
chemical_list: D006514:Hepatitis B Surface Antigens; D000509:alpha-Fetoproteins