In Alzheimer's disease, what distinguishes microglial-mediated amyloid-beta clearance from simple diffusion across the blood-brain barrier?

💡 Explanation

Microglial clearance involves receptor-mediated endocytosis of amyloid-beta, enhancing removal. This is because microglia utilize specific receptors to bind and internalize amyloid plaques, therefore it is an active and targeted process, rather than the passive, untargeted nature of simple diffusion across the blood-brain barrier.

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