There are multiple definitions:

1. reticuloendotheliosis virus(English)

   • FP, FPV
   • Virology
   • https://doi.org…1111/tbed.13668

2. reverse-phase evaporation vesicle(English)

   • liposomes formed by evaporating organic solvents from a water-in-oil emulsion, resulting in high encapsulation efficiency (often >65%) for water-soluble drugs. This method typically produces large, somewhat heterogeneous vesicles that can be reduced in size through extrusion
   • DRV, GUV, GV, MLV
   • Biochemistry, Membranes
   • https://doi.org…rfa.2018.02.060
   • https://doi.org…rel.2009.09.018