Abstract
Techniques have been developed for the cultivation of human and nonhuman primate liver cells in tissue and organ culture. Progressive non-cytocidal involvement of the normal cytoplasmic and nuclear components of cultured liver cells has been demonstrated by specific attachment of fluorescent antibody to hepatitis B core and surface antigens after inoculation of the cultures of human origin with known infective sera and with clinical material. Hepatitis B surface antigen may be produced, although infrequently, in inoculated liver organ cultures but serial passage has not been achieved. Serial passage of hepatitis B virus has been reported with fragments of human embryo liver cultivated on the chorioallantoic membrane of the developing chick embryo. Intranuclear virus-like particles have been localized in hepatocytes of cultured explants of liver biopsies obtained from infants with chronic hepatitis B antigenemia. Further studies are urgently required to determine whether cultivation of hepatitis B virus can be firmly established in readily available cell and organ cultures.
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