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. 2014 Sep 3;5:423. doi: 10.3389/fimmu.2014.00423

Figure 2.

Figure 2

Factors that can account for the different functional properties of monocytes/DCs in the course of their ontogeny. Monocytes and DCs are highly plastic, even in “steady-state” conditions. Lineage specification and function are influences by the origin of the progenitors and by environmental factors. We depict the role of the materno-fetal immunomodulatory environment (red arrows) and the direct or indirect priming effects of microbial-derived signals that are encountered after birth (green arrows).