|Cat. No. HS-384 117||
200 µl purified IgG, lyophilized. Albumin and azide were added for stabilization. For reconstitution add 200 µl H2O. Then aliquot and store at -20°C to -80°C until use.
Antibodies should be stored at +4°C when still lyophilized. Do not freeze!
Immunohistochemistry (IHC) on 4% PFA perfusion fixed tissue with 24h PFA post fixation. Immunoreactivity is usually revealed by fluorescence or a chromogenic substrate. Some antibodies require special fixation methods or antigen retrieval steps. For details, please refer to the ”Remarks” section.', $event)" style="cursor: help;">IHC: 1 : 500 (see remarks) gallery
Immunohistochemistry (IHC-P) of formalin fixed, paraffin embedded (FFPE) tissue (some antibodies require special antigen retrieval steps, please refer to the ”Remarks” section). Immunoreactivity is usually revealed by fluorescence or a chromogenic substrate.', $event)" style="cursor: help;">IHC-P: 1 : 100 up to 1 : 200 gallery
Immunohistochemistry on fresh frozen (IHC-Fr) cryo-tissue-sections. In contrast to standard PFA perfusion fixed tissues, fresh frozen cryo-tissue-sections can be variably postfixed with alcohols, acetone or PFA. Alcohol or acetone fixation is e.g. of advantage for antigens masked by PFA crosslinking. For recommended postfixation, please refer to the ”Remarks” section. Immunoreactivity is usually revealed by fluorescence or a chromogenic substrate.', $event)" style="cursor: help;">IHC-Fr: 1 : 500 (see remarks) gallery
|Subtype||IgG2a (κ light chain)|
|Immunogen||synthetic peptide corresponding to residues surrounding AA 1000 of mouse CD11b (UniProt Id: P05555)|
Reacts with: mouse (P05555).
No signal: human (P11215), rat.
Other species not tested yet.
IHC: Heat-mediated antigen retrieval (in citrate buffer pH 6) is required for immunohistochemical stainings. Antibody incubation over-night at room temperature is recommended.
Increased CD11b expression represents microglial activation in virus infected mouse brain.
CD11b also called integrin alpha-M (ITGAM) is one protein subunit that forms together with CD18 the heterodimeric integrin αMβ2 complex, also known as macrophage-1 antigen (Mac-1) or complement receptor 3 (CR3) (1). αMβ2 is expressed on polymorphonuclear neutrophils (PMN), monocytes, macrophages, some subsets of cytotoxic T lymphocytes, and NK cells. Antibodies against CD11b are frequently used to identify macrophages and microglia, however not all tissue-resident macrophages are CD11b positive. In the murine liver CD11b expression is rare and almost exclusively found on F4/80 negative cells (2). In the murine spleen CD11b+ cells are less numerous than F4/80+ cells, co-expression of CD11b and F4/80 is also rare and CD11b+ cells tend to be closer to the marginal zone (2). CD11b upregulation on residential alveolar macrophages is a marker of acute and chronic lung inflammation in mice (3). Also, in the brain CD11b is markedly increased during microglial activation (4).