Table 2.

The growth inhibitory effect of cisplatin in IGF1R downregulated Cal27-regIGF1R and SCC25-regIGF1R cells (*P < 0.05)

Cisplatin/μM	Cal27-regIGF1R cell growth inhibition (%)			SCC25-regIGF1R, cell growth inhibition (%)
	−dox	+dox	p	−dox	+dox	p
2.5	6.5	21.5	< 0.05	9	15	< 0.05
5	20	42	< 0.05	20	41	< 0.05
10	31.5	62.5	< 0.05	45	72.5	< 0.05
15	50	85	< 0.05	72.5	89.7	< 0.05
25	90	95	< 0.05	90	95	< 0.05