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Strategic vaccine delivery is critical to reducing COVID-19 transmission, mortality and long-term health impacts. A new study suggests that prioritizing vaccine delivery to older age groups and the medically vulnerable has the greatest impact in minimizing loss of life.

Studying protein changes in the kidneys as we age, as well as the transcription of genes into proteins, helps provide a full picture of the age-related processes that take place in these organs.

Despite the prevalence of Alzheimer’s, there are still no treatments, in part because it has been challenging to study how the disease develops. Now, scientists have uncovered new insights into what goes awry during Alzheimer’s by growing neurons that resemble — more accurately than ever before — brain cells in older patients. And like patients themselves, the afflicted neurons appear to lose their cellular identity.