Prevention of hepatocellular carcinoma in mice by IL-2 and B7-1 genes co-transfected liver cancer cell vaccines

Table 1 The NK cell, LAK cell and CTL activities of each group mice against different target cells (x^-±s%)

Effector cell	Target cell
	Yac-1	p815	Hepal-6
Normal group	19.0 ± 1.9	48.4 ± 1.9c	29.9 ± 1.3e
Hep6-IL2 cancer vaccine	32.5 ± 2.7a	60.9 ± 1.7	64.4 ± 12.3e
immunized group
Hep6-B7 cancer vaccine	17.0 ± 1.7	47.7 ± 1.2c	71.2 ± 1.5e
immunized group
Hep6-IL2B7 cancer vaccine	29.5 ± 2.5a	65.0 ± 2.9	83.1 ± 1.5
immunized group
Hep6 cancer vaccine	18.5 ± 1.4	42.5 ± 1.3c	52.8 ± 1.2e
immunized group

NK cell activities:

^aP < 0.05 vs normal, Hep6-B7 and Hep6 cancer vaccine immunized group; LAK cell activities:

^cP < 0.05 vs Hep6-IL2 and Hep6-IL2B7 cancer vaccine immunized group; CTL activities:

^eP < 0.05 vs Hep6-IL2B7 cancer vaccine immunized group.