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![](https://media.istockphoto.com/id/2067991710/video/human-brain-mri-scan-with-neuronal-impulses-spinning-loopable-orange-green-brain-scan-zones.jpg?b=1&s=640x640&k=20&c=L2G9NaJQU5_fRET4XCuZEGWObdvnqquz90ttBdlBkfY=)
Human Brain MRI Scan, with neuronal impulses. Spinning. Loopable. Orange-Green, Brain Scan, zones lighting up. 3D human brain with moving neuron signals.
![](https://media.istockphoto.com/id/1277327489/video/how-covid-19-can-damage-the-brain-the-deterioration-of-myelin-a-fatty-coating-that-protects.jpg?b=1&s=640x640&k=20&c=TPV7TvyTR-jInXP_pAAcu8jQ_C6WCZAjlFIScC-89OY=)
How COVID-19 can damage the brain, the deterioration of myelin a fatty coating that protects neurons
![](https://media.istockphoto.com/id/1731468215/video/human-nerve-fiber-bundle-under-microscope-cross-section-100x-times-magnification-each-bundle.jpg?b=1&s=640x640&k=20&c=DRP-y4-BUwgRneYX6i1s0BHkSWwN7e7ms-sfQI7Y2fA=)
Human nerve fiber bundle under microscope. Cross section. 100x times magnification. Each bundle of nerve fibers is called fasciculus and is surrounded by layer of connective tissue called perineurium
![](https://media.istockphoto.com/id/1731499162/video/human-nerve-bundle-under-microscope-cross-section-smooth-movement-and-focusing-each-bundle-of.jpg?b=1&s=640x640&k=20&c=3ALaChpEzdenUSAsamkuRfnJOKMcgbigcLybW6IK4V0=)
Human nerve bundle under microscope. Cross section. Smooth movement and focusing. Each bundle of nerve fibers is called fasciculus and is surrounded by layer of connective tissue called perineurium