The Catalog # of it is 2524. It recognizes a protein which is highly expressed in wild-type mouse hepatocytes. The p53 level in wt hepatocytes is not detectable by western blot but this this antibody recognizes a protein of similar size to p53 even when only 4 ug of total protein was loaded. With IF experiment, it was found to be a membrane protein. Have anyone have experienced similar situation using this antibody? Thank you.