| Code | CSB-EP011652HUc7 |
| Abbreviation | Recombinant Human IL3 protein (Active) |
| MSDS | |
| Size | $224 |
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Interleukin-3 is a pleiotropic cytokine central to hematopoietic progenitor expansion and mast cell development, making precise recombinant forms essential for dissecting JAK/STAT and MAPK signaling downstream of the IL-3 receptor. This recombinant human IL-3 encompasses the full mature sequence (residues 20–152) with a C-terminal 6×His tag, expressed in *E. coli* and purified to greater than 95% purity by SDS-PAGE, providing a suitable basis for quantitative functional work. Validated bioactivity yields an ED50 of 5.97–17.16 ng/mL in TF-1 proliferation assays, confirming signaling potency appropriate for dose-response proliferation studies, hematopoietic differentiation experiments, and use as a reference standard in cytokine detection platforms. Endotoxin levels below 1.0 EU/μg satisfy the stringent criteria typical for immune cell assays—including PBMC activation and antibody validation by ELISA—where LPS contamination would otherwise confound cytokine-attributable readouts.
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