FIGURE 4.

KLF4 and KRT13 expression are regulated during SB and calcium-induced esophageal cancer cell differentiation. A, KYSE150 cells were incubated with 4 mm SB for the indicated time, and the expression of KLF4 and KRT13 was determined by Western blot. B, KYSE150 cells were incubated with increasing concentrations (0–5 mm) of SB for 48 h. The expression of KLF4 and KRT13 was determined by Western blot. C, KYSE150 and KYSE450 cells were incubated with 2.4 mm CaCl₂ for the indicated times, and the expression of KLF4 and KRT13 was determined by Western blot.