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R&D Systems™ Human IGF-I Recombinant Protein Available on GSA/VA Contract for Federal Government customers only.

Manufacturer:  R&D Systems™ 291G1200

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Catalog No. 291G1200


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Description

Description

Measured in a serum-free cell proliferation assay using MCF-7 human breast cancer cells. Karey, K.P. et al. (1988) Cancer Research 48:4083. The ED 50 for this effect is 0.3-1.5 ng/mL. The specific activity of recombinant human IGF-I/IGF-1 is approximately 2.5 IU/µg, which is calibrated against recombinant human IGF-I/IGF-1 WHO International Standard (NIBSC code: 91/554).

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Specifications

Specifications

Lyophilized from a 0.2μm filtered solution in PBS.
7.6 kDa
97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
E. coli
Unlabeled
3479
IGF-I/IGF-1
200μg
Use a manual defrost freezer and avoid repeated freeze-thaw cycles. 12 months from date of receipt, -20 to -70° C as supplied. 1 month, 2 to 8° C under sterile conditions after reconstitution. 3 months, -20 to -70° C under sterile conditions after reconstitution.
Yes
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