GFAP and neoplasm: Quantitative PCR (qPCR) analysis of the murine brain metastases revealed no significant differences in tumor load (Ck8), Mɸ/MG activation (Csf1r), or AS activation (Gfap) (Fig. 5A and Supplementary Fig. S2A) between WT and MyD88−/− untreated or LPS-treated mice.