Hepatoma cells up-regulate expression of programmed cell death-1 on T cells

Table 1 Up-regulated expression of PD-1 on T cells (n = 24, mean ± SD)

Groups		PD-1(%)
Controls		0.70 ± 0.03
Co-cultured	HepG2	16.17 ± 2.5a
	HepG2.2.1.5	17.43 ± 2.2b

^aP = 0.000,

^bP = 0.000 vs control group.

Table 2 Secretion of cytokines by T cells (pg/mL, n = 24, mean ± SD)

Groups	IL-2	IFN-γ	IL-10
Control group	102.9 ± 53.0	39.3 ± 4.2	34.6 ± 13.7
Blocking group	202.9 ± 53.0c	88.6 ± 4.6d	63.7 ± 13.4e

^cP = 0.000,

^dP = 0.000,

^eP = 0.000 vs control group.