Table 3.

Detection of TTF-1, PTEN, and NIS expressions in each group of patients $\left(\overline{x}\pm s\right)$.

Group	TTF-1	PTEN	NIS
Normal group	0.61 ± 0.02	1.69 ± 0.10	0.38 ± 0.05
CEA-positive group	1.02 ± 0.03a	0.97 ± 0.05a	0.81 ± 0.61a
TAP-positive group	1.23 ± 0.10ab	0.55 ± 0.02ab	1.46 ± 0.13ab
CEA + TAP-positive group	2.01 ± 0.14abc	0.29 ± 0.01abc	2.03 ± 0.20abc
F	56.310	78.252	75.216
P	0.001	0.001	0.001

Note: compared with the normal group, ^aP < 0.05; compared with the CEA-positive group, ^bP < 0.05; compared with the TAP-positive group, ^cP < 0.05.