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    "headline": "Immune Cells Do Not Age the Same in Every Organ",
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    "dek": "A cross-tissue meta-analysis found shared and organ-specific aging signatures in macrophages, with differences by tissue and sex.",
    "summary": "A cross-tissue meta-analysis found shared and organ-specific aging signatures in macrophages, with differences by tissue and sex.",
    "body_text": "USC researchers combined public sequencing data from dozens of studies to compare macrophage aging across tissues and between sexes. The resulting map separates common transcriptional changes from signatures that depend on the organ niche, providing a scale no single experiment could easily reach. Because macrophages help coordinate repair, inflammation, and defense, the resource may guide work on immune health in later life. The analysis identifies associations in existing datasets rather than a therapy that reverses cellular aging.",
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      "macrophages",
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      "title": "USC via EurekAlert: Scientists discover how macrophages age differently",
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