Astroviruses are associated with gastroenteritis in humans and many di
seases in animals. Human astroviruses (HAstVs) cannot be propagated re
adily or isolated in conventional cell cultures. The presence of tryps
in supports HAstV growth in selected cell cultures such as the continu
ous colonic carcinoma cell line (CaCo-2). This study reports on the pr
opagation of cell culture adapted reference strains of HAstV, and the
direct isolation of HAstV from stool specimens in the human hepatoma c
ell line PLC/PRF/5. (C) 1997 Elsevier Science B.V.