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. Author manuscript; available in PMC: 2021 Jan 22.
Published in final edited form as: Neuron. 2020 Jan 22;105(2):220–235. doi: 10.1016/j.neuron.2019.11.029

Figure 3. Inter-cellular cross talk in the niche.

Figure 3.

Neuronal activity may recruit multiple modes of signaling to coordinate activity of diverse niche actors and NSCs. a. Parallel mode: A single niche derived signal (light blue) may act simultaneously on cognate receptors present on astrocytes (green), microglia (orange), endothelial cells (red) and NSCs (pink). b. One-on-one mode: NSCs may receive a signal from only one cell-type. c. Sequential mode: This mode invokes communication across a cascade of niche actors such that signals are sequentially transmitted to ultimately reach NSCs. See text for details.