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  "path": "/news2/biotech/newsid=68954.php",
  "publishedAt": "2026-03-20T13:31:06.000Z",
  "site": "https://www.nanowerk.com",
  "textContent": "An AI model that screens ionizable lipids by 3D conformation identified a candidate 14.8 times more efficient than current clinical lipids, enabling spleen-targeted mRNA vaccines.",
  "title": "AI model uses 3D lipid structures to improve mRNA nanoparticle delivery"
}