at this time , morphological observations by phase-contrast and immunofluorescence microscopy using monoclonal antibodies against the 55 000 and 49 000 mr components revealed that under growth-promoting conditions the hepatocytes were spread and the cytokeratin filaments were stretched , whereas under differentiation-promoting conditions the cultures constitute a compact monolayer of cells exhibiting highly ordered filaments .
C0007634
cells
C0010851
filaments