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224,000+ research products · Triple ISO certified · COA & SDS available for every product · Same-day shipping on in-stock items

Recombinant CD19 Antibody - Primary antibody, specific to CD19

Cat. No.: Ab222893
COA
Recombinant CD19 Antibody - by Aladdin Scientific
AVAILABLE TO ORDER
GRADE & PURITY Carrier Free ? Carrier-free — supplied without added carrier protein/stabilizer. Use when carriers (e.g. BSA) would interfere with conjugation or sensitive assays. Recombinant ? Recombinant — produced via recombinant expression for defined sequence and consistency. Use for reproducible, animal-free proteins of known origin. Validated ? Validated grade — performance confirmed in defined applications before release. Use when you want documented assurance the reagent works as stated. ExactAb™ ? ExactAb™ — Aladdin's antibody line emphasizing precision and validated quality. Use for reliable, specificity-validated antibody applications. Azide Free ? Azide-free — without sodium azide preservative. Use in conjugations, cell work, or assays where azide is toxic or inhibitory. High Performance ? High-performance grade with optimized purity and performance characteristics. Use for sensitive analyses where ordinary grades fall short. PBS Only ? PBS-only formulation — supplied in phosphate-buffered saline with no other additives. Use when you need a clean PBS buffer free of stabilizers/carriers. ≥95%(SDS-PAGE) See COA
Application
ELISA, Flow Cytometry
Host species
Rat
Reactive species
Mouse
Isotype
Rat IgG2a
Conjugation
Unconjugated
★
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1mg
Ab222893-1mg
1-2 wks(?)
Item is derived from our semi-finished stock and is processed in 1-2 weeks.
$139.90
5mg
Ab222893-5mg
1-2 wks(?)
Item is derived from our semi-finished stock and is processed in 1-2 weeks.
$399.90
25mg
Ab222893-25mg
1-2 wks(?)
Item is derived from our semi-finished stock and is processed in 1-2 weeks.
$1,199.90
100mg
Ab222893-100mg
1-2 wks(?)
Item is derived from our semi-finished stock and is processed in 1-2 weeks.
$2,999.90
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SDS
Safety data
COA
Certificate
DS
Datasheet
SP
Spec sheet
Overview Specifications Storage and Shipping Images Application Documentation Advanced Data Associated Targets(Human) Certificates（CoA,COO,BSE/TSE and Analysis Chart) Solution Calculators Reviews
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Why this grade

Carrier Free,Recombinant,ExactAb™,Azide Free,Validated,High Performance,PBS Only,≥95%(SDS-PAGE),See COA Azide Free,Carrier Free,ExactAb™,High Performance,PBS Only,Recombinant,Validated for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at -20°C,Avoid repeated freezing and thawing Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Recombinant CD19 Antibody, clone P04A53, could be used for Flow Cytometry and so on.

Specifications

Product Name
Recombinant CD19 Antibody - Primary antibody, specific to CD19
Synonyms
B4 | B-lymphocyte antigen CD19 | B-lymphocyte surface antigen B4 | CD19 antigen | CD19 molecule | CD19 | CVID3 | Differentiation antigen CD19 | Leu-12 | MGC12802 | T-cell surface antigen Leu-12 | Antibody deficiency due to defect in CD19 antibody | Antibo
Specifications & Purity
Carrier Free, Recombinant, ExactAb™, Azide Free, Validated, High Performance, PBS Only, ≥95%(SDS-PAGE), See COA
Biochemical and Physiological Mechanisms
Functions as a coreceptor for the B-cell antigen receptor complex (BCR) on B-lymphocytes. Decreases the threshold for activation of downstream signaling pathways and for triggering B-cell responses to antigens (By similarity). Activates signaling pathway
Host species
Rat
Specificity
CD19
Immunogen
Transfected K562 cells expressing the extracellular domain of murine CD19.
Positive Control
Flow: C57BL/6 Mouse splenocytes
Conjugation
Unconjugated
Grade
Azide Free, Carrier Free, ExactAb™, High Performance, PBS Only, Recombinant, Validated
Light Chain Type
kappa
SDS-PAGE
150 kDa
Purification Method
Protein G purified
Concentration
See COA
Note
This product can replace Ab094090
Storage and Shipping
Storage
Store at -20°C,Avoid repeated freezing and thawing
Shipped In
Ice chest + Ice pads
Stability And Storage
Store at 4°C short term (1-2 weeks). Store at -20°C or -80°C. Avoid freeze / thaw cycle.
Images
Recombinant CD19 Antibody (Ab222893) - Flow Cytometry 
Flow Cytometry analysis of C57BL/6 Mouse splenocytes labelling CD19 with Recombinant CD19 Antibody (Ab222893) (right panel) at 0.2 μg/mL for 1 hour at 4°C, compared with Rat IgG Isotype Control Antibody (Ab141774) (left panel) and detected with AF 647 - conjugated affinipure goat anti-Rat IgG.
Recombinant CD19 Antibody (Ab222893) - Flow Cytometry 
Flow Cytometry analysis of C57BL/6 Mouse splenocytes labelling CD19 (red) with Recombinant CD19 Antibody (Ab222893) at 0.2 μg/mL for 1 hour at 4°C and detected with AF 647 - conjugated affinipure goat anti-Rat IgG. Blue - Rat IgG Isotype Control Antibody (Ab141774). Black - Unlabelled control, cells without incubation with primary antibody.
Recombinant CD19 Antibody (Ab222893) - SEC
 The purity of Recombinant CD19 Antibody (Ab222893) is more than 95% verified by HPLC.
Application
ApplicationDilution info
Flow Cytometry

≤0.5 µg per million cells in 100 µl volume

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Associated Targets(Human)
CD19 Tclin B-lymphocyte antigen CD19 (0 Activities)
Activity TypeActivity Value -log(M)Mechanism of ActionActivity ReferencePublications (PubMed IDs)
Certificates（CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

2 results found

Lot NumberCertificate TypeDateItem
ZJ26F0232259Certificate of AnalysisFeb 27, 2026 Ab222893
ZJ26F0232258Certificate of AnalysisFeb 27, 2026 Ab222893
Solution Calculators
Reviews

Customer Reviews

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