| FPN | ferric chloride, perchloric acid, and nitric acid [solution] |
|---|---|
| HA | H antigen; Hakim-Adams [syndrome]; halothane anesthesia; Hartley [guinea pig]; headache; health alli... |
| HPAA | hydroperoxyarachidonic acid; hydroxyphenylacetic acid; hypothalamo-pituitary-adrenal axis |
| IA | ibotenic acid; immune adherence; immunoadsorbent; immunobiologic activity; impedance angle; indolami... |
| iRNA | immune ribonucleic acid; informational ribonucleic acid |