00546nas a2200229   4500000000100000008004100001260001600042653003100058653001300089653001600102653002200118653002200140653001100162653002000173653001200193653001300205100001700218245004800235300001200283490000700295022001400302       1969                            d  c1969 Nov 1910aAntigen-Antibody Reactions10aAntigens10aHepatitis A10aHepatitis B virus10aHepatitis Viruses10aHumans10aImmunodiffusion10aleprosy10aLeukemia1 aNordenfelt E00a[Has the hepatitis virus been discovered?].  a4877-820 v66  a0023-7205