Figure 4From: Attenuation of PTEN increases p21 stability and cytosolic localization in kidney cancer cells: a potential mechanism of apoptosis resistancep21 is increased in PTEN-knockdown cells. ACHN cells stably transfected with PTEN-shRNA or empty vector control were immunoblotted with PTEN, p21, and β-actin. Quantification of p21 and PTEN bands was determined by densitometry, normalized to β-actin expression, and expressed as fold-change p21/PTEN.Back to article page