Bio & Biochem Quiz
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FOUNDATIONAL CONCEPT 2: CELLS AND CELLULAR ORGANIZATION
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Researchers compared epidermal wound healing in young and aged mice after a standardized full-thickness skin punch. Aged mice showed slower closure and a prolonged presence of senescent cells (identified by a senescence reporter) near the wound margin. When senescent cells were selectively cleared during the first week after injury, closure improved, but excessive clearing led to fragile, easily re-injured epithelium. Which outcome is expected concerning aging?
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