Hyperphosphorylated and hypophosphorylated Rb and p107 protein levels.

Rb and p107 protein expression was assessed in 72-hour cultured CLRPP in the presence (anti-TGF-beta1) or the absence (Ctrl CLRPP) of anti-TGF-β1 neutralizing mAb (10 μg/mL). Panels represent 4 different experiments. Bar graph shows each protein level as the mean ± SD relative adsorbance ratio between the protein of interest and actin observed in 4 different experiments. P > .05 for both Rb and p107 in their hyperphosphorylated (Phosphorylated) and hypophosphorylated (Unphosphorylated) forms.