| Abbreviations | Meaning |
 | APPA | American Psychopathological Association; 4-aminophenylacetic Acid |
| GTA | Gene Transfer Agent; Glanzmann Thrombasthenia; Glycerol Teichoic Acid |
| IRNA | Immune Ribonucleic Acid; Informational Ribonucleic Acid |
| OASP | Organic Acid Soluble Phosphorus |
| ISS | Infantile Sialic Acid Storage [disease] |
| PEAAC | Poly(ethylacrylic Acid) |
| UDS | Ultrasound Doppler Sonography; Uniform Data System; Unscheduled Deoxyribonucleic Acid [DNA] Synthesis |
| BCKD | Branched-chain Alpha-keto Acid Dehydrogenase |
| PRORS | Propyl Transfer Ribonucleic Acid Synthase [RNAse] |
| LM | Lactic Acid Mineral [medium] |
| AH | Abdominal Hysterectomy; Absorptive Hypercalciuria; Accidental Hypothermia; Acetohexamide; Acid Hydrolysis; Acute Hepatitis; Adrenal Hypoplasia |
| EDTMP | Ethylenediamine Tetramethylene Phosphoric Acid |
| ABC | Abacavir; Absolute Basophil Count; Absolute Bone Conduction; Acalculous Biliary Colic; Acid Balance Control; Aconite-belladonna-chloroform |
| RAP | Ribonucleic Acid [RNA] Arbitrarily Primed |
| ISSD | Infantile Sialic Acid Storage Disease |
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