Fig. 2.
Optimizing the amount of anti–TGF-β antibody to decrease p15 protein levels.
UCB CD34+ progenitors were incubated for 18 hours in serum-free media alone or in the presence of increasing concentrations of anti–TGF-β antibody (ng/mL). Cell lysates were prepared and subjected to 15% SDS-PAGE, followed by immunoblotting with a polyclonal antibody to p15Ink4b.