title: Frequent occurrence of hepatitis B virus surface antigen mutants in subtype adw in vaccinated Singapore infants.
authors.forename: W N
authors.initials: WN
authors.lastname: Chen
authors.forename: C J
authors.initials: CJ
authors.lastname: Oon
authors.forename: G K
authors.initials: GK
authors.lastname: Lim
mesh_terms: D000939:Epitopes / Q000235:genetics; D005787:Gene Frequency; D006514:Hepatitis B Surface Antigens / Q000145:classification / Q000235:genetics* / Q000302:isolation & purification; D017325:Hepatitis B Vaccines / Q000494:pharmacology; D006515:Hepatitis B virus / Q000235:genetics* / Q000302:isolation & purification; D006801:Humans; D007223:Infant; D009154:Mutation; D012846:Singapore
chemical_list: D000939:Epitopes; D006514:Hepatitis B Surface Antigens; D017325:Hepatitis B Vaccines