| HEIR | health effects of ionizing radiation; high-energy ionizing radiation |
|---|---|
| HEIS | high-energy ion scattering |
| HEP | hemolysis end point; hepatoerythropoietic porphyria; high egg passage [virus]; high-energy phosphate... |
| IAEA | International Atomic Energy Agency |
| IE | imaging equipment; immunizing unit [Ger. Immunitats Einheit]; immunoelectrophoresis; infectious endo... |