Table 2.

Expression of p16^INK4A in CINs and ISCCs

Tissues	Degree of immunoreactivity(%)
	–	1+	2+	3+
Normala	36/36 (100.0)	0/36 (0.0)	0/36 (0.0)	0/36 (0.0)
CIN Ib	1/50 (2.0)	31/50 (62.0)	15/50 (30.0)	3/50 (6.0)
CIN IIc	1/52 (1.9)	5/52 (9.6)	27/52 (51.9)	19/52 (36.5)
CIN IIId	0/44 (0)	6/44 (13.6)	25/44 (56.8)	13/44 (29.5)
ISCCse	0/61 (0)	16/61 (26.2)	14/61 (23.0)	31/61 (50.8)

CIN cervical intraepithelial neoplasia, ISCCs invasive squamous cell carcinomas

^a-bP < 0.005, ^a-cP < 0.005, ^a-dP < 0.005, ^a-eP < 0.005, ^b-cP < 0.005, ^b-dP < 0.005,

^b-eP < 0.005, ^c-dP > 0.05, ^c-eP > 0.05, ^d-eP > 0.05;