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. Author manuscript; available in PMC: 2014 Jan 1.
Published in final edited form as: Semin Cell Dev Biol. 2012 Sep 25;24(1):11–21. doi: 10.1016/j.semcdb.2012.09.007

Figure 4. Schematic diagram depicting putative paracrine and autocrine pathways in human pancreatic islets.

Figure 4

Arrows indicate the origin and target of a particular paracrine signal. Black arrows denote excitatory signaling, white arrows indicate inhibition.