| GRE | glucocorticoid response element; gradient-recalled echo; Graduate Record Examination |
|---|---|
| GSR | galvanic skin response; generalized Shwartzman reaction; glutathione reductase |
| HAZWOPER | Hazardous Waste Operation and Emergency Response [of OSHA] |
| HR | heart rate; hemorrhagic retinopathy; high resolution; higher rate; histamine receptor; hormonal resp... |
| HVR | hypervariable region; hypoxic ventilation response |