Human microglia signature miRNA are present in MMG cells. HMG cells were isolated from 90- to 145-day-old human fetal brain tissue. MMG cells were generated in vitro by culturing CD14+ cells from healthy human donor blood in the presence of MCSF, GMCSF, NGF-β, and CCL2 for 10–12 days. RNA extracted from primary HMG and MMG cells was analyzed for human signature miRNA miR-99a, miR-125b-5p, and miR-342-3p expression by qPCR. miRNA expression level was normalized against U6 miRNA using ΔCt (n = 3). miRNA levels were compared between HMG and MMG cells derived from three independent healthy human donor bloods and fetal brain tissues, respectively. Data are presented as mean ± SD n = 3. *P < 0.05