All lanes : Anti-Tau (phospho S214) antibody ( ab10891 ) at 1/250 dilution Lane 1 : HeLa (Human epithelial carcinoma cell line) Whole Cell Lysate Lane 2 : HeLa (Human epithelial carcinoma cell line) Whole Cell Lysate with Human Tau (phospho S214) peptide (ab19123) at 1 µg/ml Lysates/proteins at 10 µg per lane. Secondary Goat polyclonal to Rabbit IgG - H&L - Pre-Adsorbed (HRP) at 1/3000 dilution Performed under reducing conditions. Predicted band size : 79 kDa Observed band size : 90 kDa ( why is the actual band size different from the predicted? ) Exposure time : 2 minutes