| Code | CSB-AP003301MO |
| Abbreviation | Recombinant Mouse Il4 protein (Active) |
| MSDS | |
| Size | $142 |
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Interleukin-4 is a pleiotropic cytokine central to Th2 polarization, B-cell class switching to IgG1, and alternative macrophage activation, making it indispensable in murine immunology research. This tag-free recombinant mouse IL-4 encompasses the full-length mature sequence (residues 21–140) and demonstrates strong signaling potency, with an ED50 below 2 ng/ml in a murine HT-2 cell proliferation assay corresponding to a specific activity exceeding 5 × 10⁵ IU/mg — providing a reliable basis for dose-dependent functional assays, JAK/STAT signaling pathway studies, and Th2 differentiation experiments. Endotoxin levels below 1.0 EU/μg minimize the risk of LPS-driven artifacts that can confound readouts in primary T-cell and B-cell cultures, macrophage polarization assays, and in vivo inflammation models. Purity exceeding 97% by SDS-PAGE further supports use as a reference standard in cytokine detection assays or as a positive control for ELISA-based antibody validation.
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