| FRF | Fertility Research Foundation; follicle-stimulating hormone-releasing factor |
|---|---|
| GCRC | General Clinical Research Center [of NIH] |
| GR | gamma-rays; gastric resection; general research; generalized rash; glucocorticoid receptor; glutathi... |
| GRECC | Geriatric Research and Education Clinical Center |
| HCRE | Homeopathic Council for Research and Education |