| Code | CSB-AP002131HU |
| Abbreviation | Recombinant Human CSF1 protein, partial (Active) |
| MSDS | |
| Size | $354 |
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CSF1 (M-CSF) is a key regulator of monocyte and macrophage survival, proliferation, and differentiation, making precise recombinant forms essential for dissecting myeloid biology. This tag-free human CSF1 fragment (residues 33–190 of Isoform 3) delivers exceptional signaling potency, with an ED50 below 1 ng/mL in M-NFS-60 proliferation assays corresponding to a specific activity exceeding 1.0 × 10⁶ IU/mg — providing a reliable basis for macrophage differentiation protocols, monocyte activation studies, and downstream JAK/STAT or MAPK signaling pathway analyses. Endotoxin levels below 1.0 EU/μg minimize LPS-driven artifacts that commonly confound immune cell functional assays, which supports use in sensitive in vivo inflammation or tumor-associated macrophage models as well as serving as a reference standard in M-CSF detection assays. Purity exceeding 95% by SDS-PAGE, combined with this stringent endotoxin control, satisfies the quality criteria typical for antibody validation workflows including ELISA coating and Western blot positive controls.
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