Table 1. Primers used for real-time polymerase chain reaction.

Gene name	Primer sequence	Product length
P16INK4a	F:AGGACCCCACTACCTTCTCCC	172 bp
	R:AAATATCGCACGATGTCTTGATG
P19ARF	F:GGCATGAACCGCCGACCTAT	101 bp
	R:GGGCAGGCACAAACACGAAC
P21WAF1/CIP1	F:CCCGAGAACGGTGGAACT	115 bp
	R:TGCAGCAGGGCAGAGGAAG
P53	F:CCCCAGGATGTTGAGGAGTTT	153 bp
	R:TTGAGAAGGGACAAAAGATGACA
GAPDH	F:CTGCCCAGAACATCATCCCT	119 bp
	R:GGTCCTCAGTGTAGCCCAAGA