Recombinant Rat IL-3 β (Animal-Free)

Code Description Price Qty
GFR39AF-5 Rat IL-3 β (Animal-Free), 5 μg $76.00
GFR39AF-25 Rat IL-3 β (Animal-Free), 25 μg $196.00
GFR39AF-100 Rat IL-3 β (Animal-Free), 100 μg $497.00
GFR39AF-1000 Rat IL-3 β (Animal-Free), 1 mg $3,543.00

Achieve Purchasing Synergy

Request a quote at for 2 or more vials of any Growth Factor to receive a discount. Discounts range from 5 to 20% according to the size of your order.

PODS® Growth Factors

The product is currently not available as PODS®, please check back in the future.


This product is produced with no animal derived raw products. All processing and handling employs animal free equipment and animal free protocols.


Interleukin-3 (IL-3) is a cytokine that is produced by activated T cells and mast cells. IL-3 induces the differentiation of hematopoietic stem cells into myeloid precursor cells, such as erythrocyte, megakaryocyte, granulocyte, monocyte, and dendritic cells. IL-3 also functions in the nervous system and is important during the B-1 cell regulation of chronic inflammatory diseases.

Activity Assay

Rat IL-3 β (Animal-Free) is fully biologically active when compared to standard. The activity is determined by the proliferation of NFS-60 cells and it is typically less than 10 ng/ml. This corresponds to an expected specific activity higher than 1.0 x 104 units/mg.

AA Sequence


Alternative Names

Interleukin-3, interleukin 3, IL3, IL 3
Product Details
Length 144 aa
Molecular Weight 16.3 kDa
Structure Monomer
Source E. coli
Accession Number P04823
Purity ≥95% determined by reducing and non-reducing SDS-PAGE
Endotoxin Level ≤1.00 EU/μg as measured by kinetic LAL
Formulation Lyophilized from a sterile (0.2 micron) filtered aqueous solution containing 0.1% Trifluoroacetic Acid (TFA)
Reconstitution Centrifuge vial before opening. When reconstituting the product, gently pipet and wash down the sides of the vial to ensure full recovery of the protein into solution. It is recommended to reconstitute the lyophilized product with sterile water at 0.1 mg/ml, which can be further diluted into other aqueous solutions.
Stability and Storage

12 months from date of receipt when stored at -20°C to -80°C as supplied. 1 month when stored at 4°C after reconstituting as directed. 3 months when stored at -20°C to -80°C after reconstituting as directed.