Ag Antigen 抗原

AHA Alpha Hydroxy Acid 果酸

AID artificial insemination with donor's semen 供精者精液授精

AK Animal Kingdom 动物界

AKP alkaline phosphatase 碱性磷酸酶

ALA Alanine 丙氨酸

AMI Acute heart stem 急性心梗

AMP Adenosine Monophosphate 嘌腺呤核苷一磷酸

AMS activated mouse serum 激活的小鼠血清

AN Acrylonitrile 丙烯腈

ANP Atrial Natriuretic Peptide 心钠素，心房肽

AO Acridine Orange 吖啶橙

AP Alkaline Phosphatase 碱性磷酸酶

APC anaphase-promoting complex 后期促进因子复合物

Apr Ampicillin replication sequence 氨卞青霉素抗性基因

AQIS Australian Quarantine Inspection Service 澳洲检疫措施

AR Atrophic Rhinitis 萎缩性鼻炎

ARDS Adult Respiratory Distress Syndrome 成人呼吸窘迫综合症

arg Argnine 精氨酸

ARS Autonomously Replicating Sequence 自主复制序列