There are multiple definitions:

1. very late antigen(English)

   • type 4 is equivalent to alpha-4-beta-1 integrin
   • VLA-2, VLA-4
   • Proteins / proteomics, Receptors
   • https://link.sp…0555-014-9545-x

2. vertical long axis(English)

   • HLA, CMR
   • Medical imaging, Cardiology
   • https://doi.org…350-022-03051-z
   • https://doi.org…2968-017-0327-9