There are multiple definitions:

1. thymidine 5'-diphosphate(English)

   • Abbreviation may be used in Am. Soc. Physiol. journals without definition.
   • Physiology

2. TAR DNA-binding protein 43(English)

   • AD, ARTFL, CU, CDR, CSF, FAQ, FTD, GDS, MCI, MMSE, NfL, PCA, PET, PPA, PSP, SEADL, SUVR, TDP, TES, 18F-FTP
   • Alzheimer's disease
   • https://doi.org…4422(21)00214-3