CD4 antibody

L3T4; Leu3; Ly-4; Lymphocyte antigen CD4; p55; T cell antigen T4/LEU3; T cell differentiation antigen L3T4; T-cell surface antigen T4/Leu-3; T-cell surface glycoprotein CD4

Positive Control: Tonsil: A moderate to strong membranous CD4 immunostaining should be seen in a subset of T-lymphocytes which is predominantly located in the interfollicular area. Macrophages in the germinal centres should show a moderate CD4 positivity. Liver: Kupffer cells and endothelial cells in the liver sinusoids must show at least a moderate CD4 staining. Negative Control: Tonsil: B-cells and epithelial cells must not show any CD4 staining. Liver: Hepatocytes must not show any CD4 staining. Cellular Localization: Cell surface Protocol Recommendations: Manual Protocol: Freshly cut sections should be used (less than 10 days between cutting and staining) . Heat-induced antigen retrieval for 5 minutes in an autoclave at 121°C in pH 7.8 Target Retrieval Solution buffer. Apply the antibody at a dilution of 1:150 at 37°C for 60 minutes. Visualization of bound antibody by the EnVision Kit (Dako, Agilent) according to the manufacturer’s directions.