OMB means Office of Management and Budget U.S. in FDA
Similar to OMB
A-VO2 - ArterioVenous OxygenA/L - Annual Leave
A2LA - American Association for Laboratory Accreditation
AAA - Abdominal Aortic Aneurysm
AAALAC - Association for Assessment and Accreditation of Laboratory Animal Care International
AAAP - American Association of Avian Pathologists
AABB - American Association of Blood Banks
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