Science2018globalhigh confidence

Older mice developed frailty and reduced survival effects with fewer transplanted senescent cells than younger mice did.

Notes on verification

Confirmed directly by the peer-reviewed Nature Medicine paper (Xu et al., 2018) abstract and full text, corroborated by NIH news release, Mayo Clinic blog posts, and independent science reporting (STAT News, Fight Aging). [tier=silver indep_score=1.0 clusters=2 claim_tier=notable]

Sources