Dorothy “Dottie” Thomas, wife and research partner to 1990 Nobel laureate E. Donnall Thomas, died Jan. 9, 2015, at her home near Seattle. She was 92.

Don Thomas, pioneer of the bone marrow transplant and former director of the Clinical Research Division at Fred Hutchinson Cancer Research Center, preceded her in death on Oct. 20, 2012, also at age 92.

The Thomases formed the core of a team that proved bone marrow transplantation could cure leukemias and other blood cancers, work that spanned several decades.