title: Australia antigen and the human fetus.
mesh_terms: D005260:Female; D006506:Hepatitis A / Q000276:immunology*; D006511:Hepatitis B Antigens; D006515:Hepatitis B virus; D006801:Humans; D005779:Immunodiffusion; D007223:Infant; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases; D008854:Microscopy, Electron; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000276:immunology*; D013997:Time Factors
chemical_list: D006511:Hepatitis B Antigens