AWhat changed
Introduced mouse spleen-colony readout for proliferative marrow cells and radiation sensitivity.
Scientific scope
The record is the exact two-author 1961 Radiation Research paper. Its direct observations concern irradiated mice and colony-forming cells; later interpretation as foundational stem-cell evidence, self-renewal experiments and human clinical transplantation remain distinct.
Evidence
The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. The record is the exact two-author 1961 Radiation Research paper. Its direct observations concern irradiated mice and colony-forming cells; later interpretation as foundational stem-cell evidence, self-renewal experiments and human clinical transplantation remain distinct.
Contributors
- James E. Till · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.
- Ernest A. McCulloch · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.
Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.
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