Table 3.

Comparison of P53 and CK20 immunohistochemical stains based on tumor depth

P-value	Tumor Depth					IHC
	T4	T3	T2	T1	Ta
0.38						P 53
	3	1	7	9	13	Positive
	0	0	2	4	11	Negative
0.18						CK 20
	3	1	8	11	14	Positive
	0	0	1	2	10	Negative