IL-17RC detection by Western blotting. Total protein extracts were prepared from SV40 fibroblasts or HEK-293T cells 48 h after transfection. The proteins were separated by electrophoresis. The bands were electroblotted onto a membrane, which was then probed with an antibody against IL-17RC (Sigma-Aldrich) or GAPDH (Santa Cruz Biotechnology, Inc.).