There are multiple definitions:

1. ubiquitin-proteasome system(English)

   • main sensor for the health of neurons
   • UBA, LLPS, CARP, DARP, MLP, MURF, PEVK-domain, AD, ALS, AMPK, LIR, mTOR, UBD, PROTAC
   • Neurons, Biomarker
   • https://lifesen…oteasomesystem/
   • https://doi.org…science.aax3769

2. uninterruptable power supply(English)

   • UBEC
   • Medical technology (assessment)

3. undifferentiated pleomorphic sarcoma(English)

   • Oncology

4. urgency perception scale(English)

   • OAB, OAB-q, PPBC, UUI
   • Urology, Scoring systems/scales
   • https://doi.org….1111/bju.12678