Fig. 6.
Western blot analysis of RARα and PML-RARα expression in NB4 cells untreated (A), treated with 1 μmol/L As2O3 for 24 hours (B) and 48 hours (C), and with 0.1 μmol/L As2O3 for 24 hours (D) and 48 hours (E). Both bands of 52 kD and 110 kD represented wild-type RARα and PML-RARα chimeric proteins, respectively.