同种异型性：蛋白质由遗传控制的特性，即同一种属内的不同成员可以抗原性各异的形式存在，如血清蛋白同族抗原(尚未能以化学或生化方法作出鉴别)；同种异型的情况- Ananase
- ananastasia
- anancastic
- anangioid
- anapepsia
- anaphalantiasis
- anaphase
- anaphia
- anaphoresis
- anaphoria
- anaphrodisiac
- anaphylactic
- anaphylactin
- anaphylactogen
- anaphylactogenesis
- anaphylactogenic
- anaphylactoid
- anaphylactotoxin
- anaphylatoxin
- anaphylaxin
- anaphylaxis
- anaphylotoxin
- anaplasia
- Anaplasma
- Anaplasmataceae