Date published: 2026-4-5

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CD21 Antibodies

Santa Cruz Biotechnology provides a broad selection of CD21 monoclonal antibodies for various research applications. CD21 monoclonal antibodies are suitable for western blotting (WB), immunoprecipitation (IP), immunofluorescence (IF), immunohistochemistry with paraffin-embedded sections (IHCP), flow cytometry (FCM), and enzyme-linked immunosorbent assay (ELISA). CD21, also known as complement receptor 2, plays a critical role in the immune response by serving as a receptor for the complement component C3d and facilitating B cell activation. CD21 is essential for the regulation of B cell development and function, making it a key player in adaptive immunity. Understanding CD21 function provides valuable insights into various immunological disorders and potential therapeutic interventions. CD21 monoclonal antibodies enable precise detection and characterization of CD21 expression patterns across different cell types and tissues. CD21 monoclonal antibodies support cutting-edge research in immunology, contributing to scientific discoveries that advance our understanding of immune system function and regulation. Santa Cruz Biotechnology monoclonal antibodies for CD21 research empower scientists worldwide to make meaningful contributions to immunology research and therapeutic development.

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CD21 Antibodies

Empty Table HeaderProduct NameCATALOG #ISOTYPEEPITOPEAPPLICATIONSSpeciesCitationsRATING

CD21 Antibody (A-3)

sc-13135mouse IgG2b κ21-260 (h)WB, IP, IF, IHC(P), ELISAm, r, h
9
(6)

CD21 Antibody (HB-5)

sc-18857mouse IgG2a κFL (h)WB, IP, IF, FCMh
3
(1)

CD21 Antibody (BU32)

sc-52464mouse IgG1 κ(h)IF, FCMh

new

(1)

CD21 CRISPR Knockout, HDR and Double Nickase Plasmids

Empty Table HeaderProduct NameCATALOG #SpeciesAPPLICATIONSMARKERCitationsRATING

CD21 CRISPR/Cas9 KO Plasmid (h)

sc-401352hGene KnockoutGFP0
(0)

CD21 HDR Plasmid (h)

sc-401352-HDRhHomology Directed RepairPuromycin0
(0)

CD21 Double Nickase Plasmid (h)

sc-401352-NIChGene KnockoutPuromycin0
(0)

CD21 Double Nickase Plasmid (h2)

sc-401352-NIC-2hGene KnockoutPuromycin0
(0)

CD21 CRISPR/Cas9 KO Plasmid (m)

sc-419789mGene KnockoutGFP0
(0)

CD21 CRISPR Activation Products

Empty Table HeaderProduct NameCATALOG #SpeciesAPPLICATIONSMARKERCitationsRATING

CD21 CRISPR Activation Plasmid (h)

sc-401352-ACThGene ActivationPuro, Blast, Hygro0
(0)

CD21 Lentiviral Activation Particles (h)

sc-401352-LAChGene ActivationPuro, Blast, Hygro0
(0)

CD21 siRNA, shRNA Plasmid and shRNA Lentiviral Particle Gene Silencers

Empty Table HeaderProduct NameCATALOG #SpeciesAPPLICATIONSMARKERCitationsRATING

CD21 siRNA (h)

sc-29974hGene SilencingN/A0
(0)

CD21 shRNA Plasmid (h)

sc-29974-SHhGene SilencingPuromycin0
(0)

CD21 shRNA (h) Lentiviral Particles

sc-29974-VhGene SilencingPuromycin0
(0)

CD21 siRNA (m)

sc-29975mGene SilencingN/A0
(0)

CD21 shRNA Plasmid (m)

sc-29975-SHmGene SilencingPuromycin0
(0)

CD21 shRNA (m) Lentiviral Particles

sc-29975-VmGene SilencingPuromycin0
(0)