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. Author manuscript; available in PMC: 2020 Sep 4.
Published in final edited form as: Cell Tissue Res. 2019 Sep 4;377(3):527–547. doi: 10.1007/s00441-019-03096-6

Figure 6.

Figure 6

Functional interactions between enteric phagocytes and macrophages. Left: In sponges, food particles (bacteria, microalgae) are taken up by, and “swapped in between, stationary choanocytes (enteric phagocytes) and motile archaeocytes (macrophages; from Weissenfels 1976, with permission). Center: Even though not investigated at any length, transfer of algae taken up by enteric phagocytes to motile stromal cells has been documented for some flatworms (from Rieger 1991, with permission). Right: Coelomocytes (macrophages) in echinoderms are recruited towards the gastrodermis when pathogenic bacteria have entered the lumen of the gut (from Buckley and Rast 2017, with permission).