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This document is a compilation of summaries of various scientific articles from the journal Science. The articles cover a range of topics including immunometabolism, organic chemistry, neuroscience, vaccines, plastic pollution, biomaterials, aging stem cells, developmental biology, nanofluidics, and hydrology. Each summary provides a brief overview of the research findings and their implications. The document aims to provide library patrons with concise and culturally sensitive information to aid their research on specific topics. [Extracted from the article]

The article focuses on the step-by-step process of amyloid processing, particularly the cleavage of amyloid precursor protein (APP) by g-secretase, which generates neuronal amyloid b (Ab) aggregates, a major cause of neurodegeneration in Alzheimer's disease. It discusses controlled growth techniques for nanoribbon arrays, particularly in low-dimensional materials like tungsten disulfide.