| Abbreviations | Meaning |
 | PABA, PABA | Para-aminobenzoic Acid |
| NTA | Natural Thymocytotoxic Autoantibody; Nitrilotriacetic Acid; Nurse Training Act |
| AA | Alcoholics Anonymous; Allergic Alveolitis; Alopecia Areata; Alveolo-arterial; Aminoacetone; Amino Acid; Aminoacyl; Amyloid A |
| DDNA | Denatured Deoxyribonucleic Acid |
| YRRM | Y Ribonucleic Acid [RNA] Recognition Motif |
| SFA | Saturated Fatty Acids |
| NASBA | Nucleic Acid Sequence-based Amplification |
| NDFDA | Nonadecafluoro-n-decanoic Acid |
| GO | Gastro-[o]esophageal; Geroderma Osteodysplastica; Glutamic Oxylacetic [acid]; Gonorrhea; Glucose Oxidase |
| NAT | Nucleic Acid Amplification Testing |
| AC | Acceleration; Acetyl; Acid; Acromioclavicular; Acute; Alternating Current; Antecubital; Anterior Chamber; Atrial Contraction; Axiocervical |
| OA | Orotic Acid |
| TRNS | Transfer Ribonucleic Acid Serine |
| INAH | Isonicotinic Acid Hydrazide |
| PAST | Periodic Acid-Schiff Technique |
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