title: Hepatitis-associated antigen in cord and maternal sera.
mesh_terms: D000937:Antigen-Antibody Reactions; D005260:Female; D006306:Health Surveys; D006506:Hepatitis A / Q000209:etiology*; D006509:Hepatitis B / Q000453:epidemiology / Q000209:etiology; D006511:Hepatitis B Antigens; D006515:Hepatitis B virus / Q000276:immunology / Q000302:isolation & purification*; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D008431:Maternal-Fetal Exchange; D009519:New York City; D011247:Pregnancy
chemical_list: D006511:Hepatitis B Antigens