title: Letter: Possible role of haematophagous insects in the transmission of Type B hepatitis.
mesh_terms: D001769:Blood; D003364:Costa Rica; D009033:Culicidae / Q000382:microbiology*; D006509:Hepatitis B / Q000635:transmission*; D006511:Hepatitis B Antigens / Q000302:isolation & purification; D006515:Hepatitis B virus / Q000302:isolation & purification; D007313:Insecta
chemical_list: D006511:Hepatitis B Antigens