Our previous studies show that erythroid differentiation can be blocked by constitutive expression of the pp2a inhibiting subunit, alpha4. The aim of this study was to identify variants and transcript isoforms of PPP2CA and the inhibiting subunits alpha4 and SET, using (1) cell lines derived from haematopoietic disease, and (2) Objective: Epithelial cells grow by proliferation and adhesion, which will form an organ/tissue. STAT3 is involved in cell proliferation and various cellular events. In the present study, we studied the role of STAT3 in cell adhesion in hepatocytes.