Fig. 4. Immunoprecipitations of lysates from NB4-LR1/hTERT cells with RCK-hTERT (A) or NCL-hTERT (B) antibodies and immunoblotting with both antibodies. Positions of the molecular weight markers are indicated on the left. Positions of the proteins of interest are indicated by arrows. Position of the heavy chain (Ig) of the NCL-hTERT antibody is shown. IgG, control for nonspecific binding by performing immunoprecipitation reaction using normal IgG. No immunoprecipitation was observed with control IgG.