Background Colony-stimulating factor 1 receptor (CSF1R). a classic tyrosine kinase receptor. has been identified as a proto-oncogene in multiple cancers. The CSF1/CSF1R axis is essential for the survival and differentiation of M2-phenotype tumor-associated macrophages (M2 TAMs). https://www.roneverhart.com/Medline-Remedy-Phytoplex-Z-Guard-Skin-Protectant-Paste-Scented/