Ultrastructural changes of intercellular junctions in rat ascites hepatoma cells with calcium depletion

Hematogenous metastasis of Yoshida ascites Hepatoma in the chick embryo liver: ultrastructural changes in tumor cells.

proten tyrosine phosphatase activity in rat ascites hepatoma cells

protein tyrosine phosphatases (ptpases) regulate tyrosine phosphorylation of target proteins involved in several aspects of cellular functions. enzyme activities of the ptpases in cytosolic and particulate fractions of rat ascites hepatoma cell lines were determined and compared with those of normal rat liver. our present data revealed that although there was no neoplatic-specific alteration of...

Intercellular junctions in oral epithelial cells: ultrastructural and immunological aspects.

The activation of the molecular cascade leading to Ca++ -induced differentiation in cultured epithelial cells might be provided by the establishment of intercellular junctions between cells. In the present paper, we tested the hypothesis that Ca++ concentration would determine morphological and biochemical changes in intercellular junctions of cultured human gingival cells. Triplicate samples o...

Some ultrastructural features of Yoshida ascites hepatoma.

Roles of calcium in aggregation of rat ascites hepatoma cells by cell surface-associated adhesive factor.

Our previous studies have shown that a cell surface-associated adhesive factor (AF), separated from rat ascites hepatoma AH136B cells of a differentiated type and highly purified by chromatography, induces not only aggregation of dissociated AH136B cells or rat ascites hepatoma AH109A cells of an undifferentiated type but also adhesiveness characterized by the development of junctional complexe...