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By Haley Neff HealthDay ReporterTHURSDAY, March 19, 2026 (HealthDay News) — For decades, medical students were taught that the thymus — a small, butterfly-shaped gland in the upper chest — was essentially inactive once a person hit puberty.
But new r… [2691 chars]
Source: U.S. News & World Report | Published: 2026-03-19T10:15:00Z
Credit: U.S. News & World Report
