Instrument removal system
Insulated Return System
insulin receptor species
insulin receptor substrates
insulin receptors
insulin resistance syndrome
insulin resistant syndrome
insulin response sequence
insulin-related substrate
Integrated recovery scheduling
Integrated reporting system
Integrated Resources
Intelligence Requirements
Intelligence Requirements Subcommittee
Intelligence Research Specialist
Intelligent Refining System
Intelligent Responsible Students
Interagency Reports
Interchange Record Separator
Interdepartmental Requisitions
Interface Rqmts Specification
interferon response sequence
interferon-responsive sequence
intergenic regions
Intergroup Rhabdomyosarcoma Studies
Intergroup Rhabdomyosarcoma Study Committee
interim recovery system
Intermediate Results
internal recognition subsequence
Internal Reflectance Spectroscopy
internal resolution site
Internal Revenue Services
International Reconciliation System
International Reference Star
International Referral System
International Register of Shipping
International Repeater Station
International Retail Service
International Rhinologic Society
interspersed repetitive sequence