• Featured Product
  • KD/KO Validated

CD44 Polyclonal antibody

CD44 Polyclonal Antibody for FC, IF, IHC, IP, WB, ELISA

Host / Isotype

Rabbit / IgG


human, mouse, rat and More (2)


WB, IP, IHC, IF, FC, CoIP, Cell treatment, ELISA



Cat no : 15675-1-AP


CD44, CD44 antigen, CDW44, CSPG8, ECMR III, Epican, HCELL, Heparan sulfate proteoglycan, Hermes antigen, HUTCH I, Hyaluronate receptor, IN, MC56, MDU2, MDU3, MIC4, MUTCH I, PGP 1, PGP I, Pgp1, Phagocytic glycoprotein 1, Phagocytic glycoprotein I

Tested Applications

Positive WB detected inMDA-MB-231 cells, HeLa cells, HUVEC cells, mouse thymus tissue, A549 cells
Positive IP detected inHeLa cells
Positive IHC detected inhuman lung cancer tissue, human colon cancer tissue, human oesophagus cancer tissue
Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0
Positive IF detected inHeLa cells, human colon cancer tissue
Positive FC detected inHeLa cells

Recommended dilution

Western Blot (WB)WB : 1:2000-1:16000
Immunoprecipitation (IP)IP : 0.5-4.0 ug for IP and 1:1000-1:4000 for WB
Immunohistochemistry (IHC)IHC : 1:500-1:2000
Immunofluorescence (IF)IF : 1:50-1:500
Sample-dependent, check data in validation data gallery

Product Information

15675-1-AP targets CD44 in WB, IP, IHC, IF, FC, CoIP, Cell treatment, ELISA applications and shows reactivity with human, mouse, rat samples.

Tested Reactivity human, mouse, rat
Cited Reactivityhuman, mouse, rat, Bovine, sika deer
Host / Isotype Rabbit / IgG
Class Polyclonal
Type Antibody
Immunogen CD44 fusion protein Ag8143
Full Name CD44 molecule (Indian blood group)
Calculated molecular weight 742 aa, 82 kDa
Observed molecular weight 80-95 kDa
GenBank accession numberBC004372
Gene symbol CD44
Gene ID (NCBI) 960
Conjugate Unconjugated
Form Liquid
Purification Method Antigen affinity purification
Storage Buffer PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
Storage ConditionsStore at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage.

Background Information

CD44 is a type I transmembrane glycoprotein that mediates cell-cell and cell-matrix interactions through its affinity for hyaluronic acid (HA) and possibly also through its affinity for other ligands. Adhesion with HA plays an important role in cell migration, tumor growth and progression. CD44 is also involved in lymphocyte activation, recirculation and homing, and in hematopoiesis. This protein exists in multiple forms (with molecular weight ranging from 16 kDa to over 200 kDa) generated by alternative RNA splicing and extensive post-translational modifications.


Product Specific Protocols
WB protocol for CD44 antibody 15675-1-APDownload protocol
IHC protocol for CD44 antibody 15675-1-APDownload protocol
IF protocol for CD44 antibody 15675-1-APDownload protocol
IP protocol for CD44 antibody 15675-1-APDownload protocol
FC protocol for CD44 antibody 15675-1-APDownload protocol
Standard Protocols
Click here to view our Standard Protocols




ADAR1 masks the cancer immunotherapeutic promise of ZBP1-driven necroptosis.

Authors - Ting Zhang

J Exp Med

Targeting phospholipase D1 attenuates intestinal tumorigenesis by controlling β-catenin signaling in cancer-initiating cells.

Authors - Dong Woo Kang

Nat Commun

Naked mole-rat very-high-molecular-mass hyaluronan exhibits superior cytoprotective properties.

Authors - Masaki Takasugi
  • KD Validated

Nat Commun

5-FU promotes stemness of colorectal cancer via p53-mediated WNT/β-catenin pathway activation.

Authors - Yong-Hee Cho

J Clin Invest

circular RNA cia-MAF drives self-renewal and metastasis of liver tumor-initiating cells via transcription factor MAFF.

Authors - Zhenzhen Chen

Cell Death Differ

CRSP8 promotes thyroid cancer progression by antagonizing IKKα-induced cell differentiation.

Authors - Yina Liao


The reviews below have been submitted by verified Proteintech customers who received an incentive forproviding their feedback.


Kishor (Verified Customer) (06-23-2019)

This antibody works very good at 1:1000 in WB over night at 4o C and 1:200 for IF in cultured cells.

  • Applications: Western Blot, Immunofluorescence,
  • Primary Antibody Dilution: 1:1000 and 1:200
  • Cell Tissue Type: Human cell lines