Oncogene immortalisation has been used as an approach to isolate diffe
rentiated rat liver cell lines. This paper describes the optimisation
of the conditions for transfection and the characteristics of cell lin
es isolated. The parenchymal origin of the immortalised lines recovere
d has been demonstrated by the detection of albumin in the medium or b
y bilirubin-UDP-glucuronosyl transferase activity. The lines have been
characterised morphologically and expression of the cytoskeletal prot
ein vimentin has been detected.