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Different from the old analysis, we used a simplified reference tissue model (see the section Methods), which does not rely on arterial input function, an approach that is potentially beneficial for eliminating another source of variability (i.e., measurement errors in arterial input function) in the kinetic modeling of PET data [84]

Certificate of Analysis (COA) for Every Batch A Certificate of Analysis (COA) is a document that verifies a compounds identity, purity, and batch quality through independent laboratory testing

The FDA's 2026 advisory committee review treats each form as a distinct evaluation target

A research solution should be clear or nearly clear unless the protocol specifically says otherwise