CX3CR1⁺ MNCs are primary producers for inflammatory cytokines. Reverse-transcription quantitative polymerase chain reaction analysis of mRNA levels of TNF-α (A), IL-1β (B), and IL-6 (C) in the BM cells of SPF, GF, and CoH-GF mice (n = 5-7). Data are representative of 2 independent experiments with similar results (mean ± standard error of the mean). *Versus CX3CR1⁺ MNCs with other cell types within SPF mice. ^#Compares the values among SPF, GF, and CoH-GF mice within each cell subtype. *^/#P < .05, **^/##P < .01, ***^/###P < .001, 1-way ANOVA with Bonferroni multiple comparison.