interspersed repetitive sequences
interventional radiologists
Invasive Reperfusion Study
inverse Raman scattering
Inverse Raman Spectroscopy
inverted repeat sequence
inverted repeats
Investment Removal Salt
Investor Relations Society
ionizing radiation sensitivity
IR substrate
Iridium Monosulfide
Irrigation Research Station
IRSA Inversiones Y Representaciones S.A.
isoleucyl-tRNA synthetase
isotope ratios
Isotope Removal Service
Isotope Removal System
Item Reduction Studies
ITS Radio System
Image Retrieval System
Immune Restoration Syndrome
In a rare setback
Incident Reports
Index of Retail Saturation
Indian Remote Sensing Satellite
Individual Research Study
Inherited Runners who Scored
Institute for Research Services
Instituto de Reinserção Social
Instituto Roberto Simonsen
Insulin Receptor Signaling
Insurance Repair Specialist
Insurance Repair Specialists
Integrated Reception Systems
Interactive Reference Service
Investment Research Service