Astrocyte

Astrocytes are glial cells that control the environment within the brain and access to it by forming part of the blood–brain barrier. They have an elongated soma and several branches that form a complex tree structure with several thin processes at the end. At least one of their endfeet makes contact with a blood vessel, as can be seen in the example. One endfoot looks like a loop there. If you check the raw data, you will see that the loop encloses a blood vessel!

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