Recombinant Human IL-3 Sources

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HuMAb2's picture
Recombinant Human IL-3 Sources

Has anyone tested recombinant human IL-3 from different expression systems and noted a major difference in reactivity?

I have tested both E.coli and insect cell expressed human IL-3 and found an eight-fold difference in the ELISA reactivity, at the same IL-3 concentration.

Does anyone know of other sources (species) of recombinant human IL-3?