There are multiple definitions:

1. upper respiratory disease(English)

   • Respiratory system

2. unrelated donor(English)

   • sibling and HLA-identical URD BMT offer high cure rates with acceptable toxicity to patients with CML
   • alloHCT, ALL, AML, BMT, CLL, CML, HCT, MDS, MM, NHL, NMDP, RD
   • Transplantation
   • https://doi.org…7/s002770050547

3. undiagnosed rare disease(English)

   • DNWG, RD, UDNI
   • Diagnostics, Classification
   • https://doi.org…bh.2023.1248260