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. 2020 Nov 20;21(22):8811. doi: 10.3390/ijms21228811

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Simultaneous presynaptic effects on glutamate release. The coexpression of M₄ receptors with mGlu₂, GABA_B or mGlu₄ and mGlu₄ with GABA_B receptors in the cortex, hippocampus, and striatum of the human brain. M₄ receptors are shown in light blue (_•), mGlu₂ is shown in red (_•), mGlu₄ is shown in orange (_•), and GABA_B is shown in neon green (_•).

Simultaneous presynaptic effects on glutamate release. The coexpression of M₄ receptors with mGlu₂, GABA_B or mGlu₄ and mGlu₄ with GABA_B receptors in the cortex, hippocampus, and striatum of the human brain. M₄ receptors are shown in light blue (_•), mGlu₂ is shown in red (_•), mGlu₄ is shown in orange (_•), and GABA_B is shown in neon green (_•).