Figure 3From: Cancer stem-like sphere cells induced from de-differentiated hepatocellular carcinoma-derived cell lines possess the resistance to anti-cancer drugs mRNA levels of stemness markers in the induced sphere cells. The mRNA levels of NANOG ( A ) and LIN28A ( B ) were measured with semi-quantitative RT-PCR and represented as the ratio to levels in SK-HEP-1 cells. **P < 0.05 with the Mann-Whitney U-test. n.d., not detectable in our experimental condition.Back to article page