CD21 Antibodies
We offer CD21 Antibodies for use in common research applications: Flow Cytometry, Immunocytochemistry/Immunofluorescence, Immunofluorescence, Immunohistochemistry, Immunohistochemistry-Frozen, Immunohistochemistry-Paraffin, Immunoprecipitation, Western Blot. Each CD21 Antibody is fully covered by our Guarantee+, to give you complete peace of mind and the support when you need it. Our CD21 Antibodies can be used in a variety of model species: Bovine, Equine, Feline, Goat, Human, Mustelid, Porcine, Rat, Sheep. Use the list below to choose the CD21 Antibody which is most appropriate for your research; you can click on each one to view full technical details, images, references, reviews and related products. Choose from our CD21 polyclonal antibodies and browse our CD21 monoclonal antibody catalog.
Alternate Names for CD21 Antibodies
anti-CD21 antibody, anti-CR2 antibody, anti-C3DRSLEB9 antibody, anti-CD21 antigen antibody, anti-Complement C3d receptor antibody, anti-complement component (3d/Epstein Barr virus) receptor 2 antibody, anti-complement receptor type 2 antibody, anti-EBV receptor antibody, anti-Epstein-Barr virus receptor antibody
33 Results for "cd21" in Primary Antibodies
![Western Blot: CD21 Antibody (SC0681) [NBP2-67605] - Analysis of CD21 on Daudi celllysates. Proteins were transferred to a PVDF membrane and blocked with 5% BSA in PBS for 1 hour at room temperature. The primary antibody ( 1/500) was used in 5% BSA at room temperature for 2 hours. Goat Anti-Rabbit IgG - HRP Secondary Antibody at 1:5,000 dilution was used for 1 hour at room temperature.](http://images.novusbio.com/fullsize/CD21-Antibody-SC0681-Western-Blot-NBP2-67605-img0006.jpg "Western Blot: CD21 Antibody (SC0681) [NBP2-67605] - Analysis of CD21 on Daudi celllysates. Proteins were transferred to a PVDF membrane and blocked with 5% BSA in PBS for 1 hour at room temperature. The primary antibody ( 1/500) was used in 5% BSA at room temperature for 2 hours. Goat Anti-Rabbit IgG - HRP Secondary Antibody at 1:5,000 dilution was used for 1 hour at room temperature.")
![Immunocytochemistry/Immunofluorescence: CD21 Antibody (SC0681) [NBP2-67605] - Staining CD21 in HepG2 cells (green). The nuclear counter stain is DAPI (blue). Cells were fixed in paraformaldehyde, permeabilised with 0.25% Triton X100/PBS.](http://images.novusbio.com/fullsize/CD21-Antibody-SC0681-Immunocytochemistry-Immunofluorescence-NBP2-67605-img0002.jpg)
![Immunohistochemistry-Paraffin: CD21 Antibody (SC0681) [NBP2-67605] - Immunohistochemical analysis of paraffin-embedded human tonsil tissue using anti-CD21 antibody. The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 8.0-8.4) for 20 minutes. The tissues were blocked in 5% BSA for 30 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (ET1610-61, 1/50) for 30 minutes at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.](http://images.novusbio.com/fullsize/CD21-Antibody-SC0681-Immunohistochemistry-Paraffin-NBP2-67605-img0008.jpg)
![Immunocytochemistry/Immunofluorescence: CD21 Antibody (SC0681) [NBP2-67605] - Staining CD21 in A549 cells (green). The nuclear counter stain is DAPI (blue). Cells were fixed in paraformaldehyde, permeabilised with 0.25% Triton X100/PBS.](http://images.novusbio.com/fullsize/CD21-Antibody-SC0681-Immunocytochemistry-Immunofluorescence-NBP2-67605-img0001.jpg)
![Immunohistochemistry-Paraffin: CD21 Antibody (SC0681) [NBP2-67605] - Analysis of paraffin-embedded human gastric cancer tissue using anti-CD21 antibody. Counter stained with hematoxylin.](http://images.novusbio.com/fullsize/CD21-Antibody-SC0681-Immunohistochemistry-Paraffin-NBP2-67605-img0003.jpg)
![Immunohistochemistry-Paraffin: CD21 Antibody (SC0681) [NBP2-67605] - Analysis of paraffin-embedded human spleen tissue using anti-CD21 antibody. Counter stained with hematoxylin.](http://images.novusbio.com/fullsize/CD21-Antibody-SC0681-Immunohistochemistry-Paraffin-NBP2-67605-img0004.jpg)
![Immunohistochemistry-Paraffin: CD21 Antibody (SC0681) [NBP2-67605] - Analysis of paraffin-embedded human tonsil tissue using anti-CD21 antibody. Counter stained with hematoxylin.](http://images.novusbio.com/fullsize/CD21-Antibody-SC0681-Immunohistochemistry-Paraffin-NBP2-67605-img0005.jpg)
![Immunohistochemistry-Paraffin: CD21 Antibody (SC0681) [NBP2-67605] - Immunohistochemical analysis of paraffin-embedded human spleen tissue using anti-CD21 antibody. The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 8.0-8.4) for 20 minutes. The tissues were blocked in 5% BSA for 30 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (ET1610-61, 1/200) for 30 minutes at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.](http://images.novusbio.com/fullsize/CD21-Antibody-SC0681-Immunohistochemistry-Paraffin-NBP2-67605-img0007.jpg)
![Immunohistochemistry-Paraffin: CD21 Antibody [NBP2-38895] - Analysis in human lymph node and endometrium tissues. Corresponding CR2 RNA-seq data are presented for the same tissues.](http://images.novusbio.com/fullsize/CD21-Antibody-Immunohistochemistry-Paraffin-NBP2-38895-img0003.jpg "<b>Orthogonal Strategies Validation. </b>Immunohistochemistry-Paraffin: CD21 Antibody [NBP2-38895] - Analysis in human lymph node and endometrium tissues. Corresponding CR2 RNA-seq data are presented for the same tissues.")
![<b>Orthogonal Strategies Validation. </b>Immunohistochemistry-Paraffin: CD21 Antibody [NBP2-38895] -Staining of human lymph node shows strong membranous positivity in germinal center cells.](http://images.novusbio.com/fullsize/CD21-Antibody-Immunocytochemistry-Immunofluorescence-NBP2-38895-img0011.jpg)
![<b>Independent Antibodies Validation. </b>Immunohistochemistry-Paraffin: CD21 Antibody [NBP2-38895] - Staining of human endometrium, kidney, lymph node and tonsil using Anti-CD21 antibody NBP2-38895 (A) shows similar protein distribution across tissues to independent antibody NBP2-38684 (B).](http://images.novusbio.com/fullsize/CD21-Antibody-Immunohistochemistry-Paraffin-NBP2-38895-img0010.jpg)
![Western Blot: CD21 Antibody [NBP2-38895] - Lane 1: Marker [kDa] 250, 130, 95, 72, 55, 36, 28, 17, 10. Lane 2: Human cell line RT-4. Lane 3: Human cell line U-251MG. Lane 4: Human Plasma. Lane 5: Human liver tissue. Lane 6: Human tonsil tissue](http://images.novusbio.com/fullsize/CD21-Antibody-Western-Blot-NBP2-38895-img0002.jpg)
![<b>Orthogonal Strategies Validation. </b>Immunohistochemistry-Paraffin: CD21 Antibody [NBP2-38895] - Staining of human endometrium shows no positivity in glandular cells as expected.](http://images.novusbio.com/fullsize/CD21-Antibody-Immunohistochemistry-Paraffin-NBP2-38895-img0006.jpg)
![<b>Independent Antibodies Validation. </b>Immunohistochemistry-Paraffin: CD21 Antibody [NBP2-38895] - Staining of human lymph node shows strong membranous positivity in germinal center cells.](http://images.novusbio.com/fullsize/CD21-Antibody-Immunohistochemistry-Paraffin-NBP2-38895-img0007.jpg)
![Immunohistochemistry-Paraffin: CD21 Antibody [NBP2-38895] - Staining of human tonsil shows strong membranous positivity in germinal center cells.](http://images.novusbio.com/fullsize/CD21-Antibody-Immunohistochemistry-Paraffin-NBP2-38895-img0008.jpg)
![Immunohistochemistry-Paraffin: CD21 Antibody [NBP2-38895] - Staining of human kidney shows very weak membranous positivity in cells in tubules as expected.](http://images.novusbio.com/fullsize/CD21-Antibody-Immunohistochemistry-Paraffin-NBP2-38895-img0009.jpg)
![Immunohistochemistry: CD21 Antibody [NBP3-38538] - Immunohistochemistry analysis of paraffin-embedded Rat spleen using CD21 Rabbit pAb at dilution of 1:100 (40x lens). Microwave antigen retrieval performed with 0.01M PBS Buffer (pH 7.2) prior to IHC staining.](http://images.novusbio.com/fullsize/nbp3-38538_rabbit-cd21-pab-9122024159579.jpg "Immunohistochemistry: CD21 Antibody [NBP3-38538] - Immunohistochemistry analysis of paraffin-embedded Rat spleen using CD21 Rabbit pAb at dilution of 1:100 (40x lens). Microwave antigen retrieval performed with 0.01M PBS Buffer (pH 7.2) prior to IHC staining.")
![Immunocytochemistry/ Immunofluorescence: CD21 Antibody [NBP3-38538] - Immunofluorescence analysis of paraffin-embedded human spleen using CD21 Rabbit pAb at dilution of 1:100 (40x lens). Secondary antibody: Cy3-conjugated Goat anti-Rabbit IgG (H+L) at 1:500 dilution. Blue: DAPI for nuclear staining.](http://images.novusbio.com/fullsize/nbp3-38538_rabbit-cd21-pab-912202415171172.jpg)
![Western Blot: CD21 Antibody [NBP3-38538] - Western blot analysis of various lysates using CD21 Rabbit pAb at 1:1000 dilution.Secondary antibody: HRP-conjugated Goat anti-Rabbit IgG (H+L) at 1:10000 dilution.Lysates/proteins: 25ug per lane.Blocking buffer: 3% nonfat dry milk in TBST.Detection: ECL Basic Kit.Exposure time: 60s.](http://images.novusbio.com/fullsize/nbp3-38538_rabbit-cd21-pab-912202414163018.jpg)
![Immunocytochemistry/ Immunofluorescence: CD21 Antibody [NBP3-38538] - Immunofluorescence analysis of paraffin-embedded mouse spleen using CD21 Rabbit pAb at dilution of 1:100 (40x lens). Secondary antibody: Cy3-conjugated Goat anti-Rabbit IgG (H+L) at 1:500 dilution. Blue: DAPI for nuclear staining.](http://images.novusbio.com/fullsize/nbp3-38538_rabbit-cd21-pab-912202415121332.jpg)
![Immunocytochemistry/ Immunofluorescence: CD21 Antibody [NBP3-38538] - Immunofluorescence analysis of paraffin-embedded rat spleen using CD21 Rabbit pAb at dilution of 1:100 (40x lens). Secondary antibody: Cy3-conjugated Goat anti-Rabbit IgG (H+L) at 1:500 dilution. Blue: DAPI for nuclear staining.](http://images.novusbio.com/fullsize/nbp3-38538_rabbit-cd21-pab-912202415171157.jpg)
![Western Blot: CD21 Antibody (PD00-23) [NBP3-32135] - Western blot analysis of CD21 on Raji cell lysates with Rabbit anti-CD21 antibody (NBP3-32135) at 1/1,000 dilution. Lysates/proteins at 10 ug/Lane. Predicted band size: 113 kDa Observed band size: 130 kDa Exposure time: 2 minutes; 6% SDS-PAGE gel. Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (NBP3-32135) at 1/1,000 dilution was used in 5% NFDM/TBST at room temperature for 2 hours. Goat Anti-Rabbit IgG - HRP Secondary Antibody at 1:300,000 dilution was used for 1 hour at room temperature.](http://images.novusbio.com/fullsize/nbp3-32135_rabbit-cd21-mab-pd00-23-278202415295561.jpg "Western Blot: CD21 Antibody (PD00-23) [NBP3-32135] - Western blot analysis of CD21 on Raji cell lysates with Rabbit anti-CD21 antibody (NBP3-32135) at 1/1,000 dilution. Lysates/proteins at 10 ug/Lane. Predicted band size: 113 kDa Observed band size: 130 kDa Exposure time: 2 minutes; 6% SDS-PAGE gel. Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (NBP3-32135) at 1/1,000 dilution was used in 5% NFDM/TBST at room temperature for 2 hours. Goat Anti-Rabbit IgG - HRP Secondary Antibody at 1:300,000 dilution was used for 1 hour at room temperature.")
![Immunohistochemistry: CD21 Antibody (PD00-23) [NBP3-32135] - Immunohistochemical analysis of paraffin-embedded human tonsil tissue with Rabbit anti-CD21 antibody (NBP3-32135) at 1/4,000 dilution. The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (NBP3-32135) at 1/4,000 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.](http://images.novusbio.com/fullsize/nbp3-32135_rabbit-cd21-mab-pd00-23-298202413585521.jpg)
![Immunocytochemistry/ Immunofluorescence: CD21 Antibody (PD00-23) [NBP3-32135] - Immunocytochemistry analysis of Raji cells labeling CD21 with Rabbit anti-CD21 antibody (NBP3-32135) at 1/100 dilution. Cells were fixed in 4% paraformaldehyde for 10 minutes at 37 ℃, permeabilized with 0.05% Triton X-100 in PBS for 20 minutes, and then blocked with 2% negative goat serum for 30 minutes at room temperature. Cells were then incubated with Rabbit anti-CD21 antibody (NBP3-32135) at 1/100 dilution in 2% negative goat serum overnight at 4 ℃. Goat Anti-Rabbit IgG H&L (iFluor™ 488) was used as the secondary antibody at 1/1,000 dilution. Nuclear DNA was labelled in blue with DAPI. Beta tubulin (red) was stained at 1/200 dilution overnight at +4℃. Goat Anti-Mouse IgG H&L (iFluor™ 594) was used as the secondary antibody at 1/1,000 dilution.](http://images.novusbio.com/fullsize/nbp3-32135_rabbit-cd21-mab-pd00-23-29202410484856.jpg)
![Flow Cytometry: CD21 Antibody (PD00-23) [NBP3-32135] - Flow cytometric analysis of Raji cells labeling CD21. Cells were fixed and permeabilized. Then stained with the primary antibody (NBP3-32135, 1ug/ml) (red) compared with Rabbit IgG Isotype Control (green). After incubation of the primary antibody at +4℃ for an hour, the cells were stained with a iFluor™ 488 conjugate-Goat anti-Rabbit IgG Secondary antibody at 1/1,000 dilution for 30 minutes at +4℃. Unlabelled sample was used as a control (cells without incubation with primary antibody; black).](http://images.novusbio.com/fullsize/nbp3-32135_rabbit-cd21-mab-pd00-23-29202416453281.jpg)
![Immunocytochemistry/Immunofluorescence: CD21 Antibody (CR2/3124R) [NBP3-07754] - Immunofluorescence staining of PFA-fixed MOLT4 cells using CD21 Recombinant Rabbit Monoclonal Antibody (CR2/3124R) followed by goat anti- Mouse IgG-CF488 (green). Nuclei are stained with RedDot.](http://images.novusbio.com/fullsize/CD21-Antibody-CR2-3124R-Immunocytochemistry-Immunofluorescence-NBP3-07754-img0002.jpg "Immunocytochemistry/Immunofluorescence: CD21 Antibody (CR2/3124R) [NBP3-07754] - Immunofluorescence staining of PFA-fixed MOLT4 cells using CD21 Recombinant Rabbit Monoclonal Antibody (CR2/3124R) followed by goat anti- Mouse IgG-CF488 (green). Nuclei are stained with RedDot.")
![Immunohistochemistry-Paraffin: CD21 Antibody (CR2/3124R) [NBP3-07754] - Formalin-fixed, paraffin-embedded human Tonsil Dendritic stained with CD21 Recombinant Rabbit Monoclonal Antibody (CR2/3124R).](http://images.novusbio.com/fullsize/CD21-Antibody-CR2-3124R-Immunohistochemistry-Paraffin-NBP3-07754-img0003.jpg)
![Flow Cytometry: CD21 Antibody (CR2/3124R) [NBP3-07754] - Flow Cytometric Analysis of PFA-fixed MOLT4 cells. CD21 Recombinant Rabbit Monoclonal Antibody (CR2/3124R) followed by Goat anti-rabbit IgG-CF488 (Blue); Isotype Control (Red).](http://images.novusbio.com/fullsize/CD21-Antibody-CR2-3124R-Flow-Cytometry-NBP3-07754-img0001.jpg)
![Immunohistochemistry-Paraffin: CD21 Antibody [NBP2-38684] - Analysis in human lymph node and endometrium tissues. Corresponding CR2 RNA-seq data are presented for the same tissues.](http://images.novusbio.com/fullsize/CD21-Antibody-Immunohistochemistry-Paraffin-NBP2-38684-img0016.jpg "<b>Orthogonal Strategies Validation. </b>Immunohistochemistry-Paraffin: CD21 Antibody [NBP2-38684] - Analysis in human lymph node and endometrium tissues. Corresponding CR2 RNA-seq data are presented for the same tissues.")
![<b>Independent Antibodies Validation and Orthogonal Strategies Validation.</b>Immunohistochemistry-Paraffin: CD21 Antibody [NBP2-38684] - Staining of human endometrium, kidney, lymph node and tonsil using Anti-CD21 antibody NBP2-38684 (A) shows similar protein distribution across tissues to independent antibody NBP2-38895 (B).](http://images.novusbio.com/fullsize/CD21-Antibody-Immunohistochemistry-Paraffin-NBP2-38684-img0011.jpg)
![Immunohistochemistry-Paraffin: CD21 Antibody [NBP2-38684] - Staining of human endometrium shows no positivity in glandular cells as expected.](http://images.novusbio.com/fullsize/CD21-Antibody-Immunohistochemistry-Paraffin-NBP2-38684-img0012.jpg)
![Immunohistochemistry-Paraffin: CD21 Antibody [NBP2-38684] - Staining of human kidney shows very weak membranous positivity in cells in tubules as expected.](http://images.novusbio.com/fullsize/CD21-Antibody-Immunohistochemistry-Paraffin-NBP2-38684-img0013.jpg)
![Immunohistochemistry-Paraffin: CD21 Antibody [NBP2-38684] - Staining of human lymph node shows strong membranous positivity in germinal center cells.](http://images.novusbio.com/fullsize/CD21-Antibody-Immunohistochemistry-Paraffin-NBP2-38684-img0014.jpg)
![Immunohistochemistry-Paraffin: CD21 Antibody [NBP2-38684] - Staining of human tonsil shows strong membranous positivity in germinal center cells.](http://images.novusbio.com/fullsize/CD21-Antibody-Immunocytochemistry-Immunofluorescence-NBP2-38684-img0015.jpg)
![Flow Cytometry: CD21 Antibody (BB6-11C9.6) [NBP1-28245] - Porcine peripheral blood lymphocytes were stained with Mouse Anti-Porcine CD21-UNLB followed by Goat Anti-Mouse IgG1, Human ads-FITC.](http://images.novusbio.com/fullsize/CD21-Antibody-BB6-11C9-6-Flow-Cytometry-NBP1-28245-img0004.jpg "Flow Cytometry: CD21 Antibody (BB6-11C9.6) [NBP1-28245] - Porcine peripheral blood lymphocytes were stained with Mouse Anti-Porcine CD21-UNLB followed by Goat Anti-Mouse IgG1, Human ads-FITC.")
![Flow Cytometry: CD21 Antibody (BB6-11C9.6) [NBP1-28245] - Analysis using the Biotin conjugate of NBP1-28245. Multiple staining of peripheral blood lymphocytes.](http://images.novusbio.com/fullsize/CD21-Antibody-BB6-11C9-6-Flow-Cytometry-NBP1-28245-img0002.jpg)
![Flow Cytometry: CD21 Antibody (BB6-11C9.6) [NBP1-28245] - Analysis using the FITC conjugate of NBP1-28245. Multiple staining of peripheral blood lymphocytes.](http://images.novusbio.com/fullsize/CD21-Antibody-BB6-11C9-6-Flow-Cytometry-NBP1-28245-img0003.jpg)