Table 4.

The expression of CAR in different stages of squamous cell carcinoma.

Stages	CAR expression		Positive rate (%)^{^*}
Stages	—	+~+++	Positive rate (%)^{^*}
I (11)	9	2	22.2
II (42)	22	20	47.6
III (12)	6	6	50.0

↵* Rates of expression were not significantly different (P>0.05).