OPB (ORA) means Operations and Policy Branch ORA in FDA
Similar to OPB (ORA)
AAR - After Action ReviewAARP - American Association of Retired Persons
AAS - Acute Abdominal Series
AASRP - American Association of Small Ruminant Practitioners
AATB - American Association of Tissue Banks
AAVLD - American Association of Veterinary Laboratory Diagnosticians
AB - Analysis Branch
View all in FDA