细菌：在以前的分类系统中，为原核生物界(Procaryotae)的一分支，除蓝绿色藻类外，包括所有原核生物。又见Procaryotae- bacteroidosis
- bacteruria
- bactetriotropin
- Bactocill
- Bactoscilla
- Bactroban
- baculovirus
- baculum
- Badal's operation
- badge
- Baelz's disease
- Baerensprung's erythrasma
- Baer's cavity,law,vesicle
- bag
- bagasscosis
- bagassosis
- Baillarger's lines
- Bainbridge reflex
- bake
- Baker's cyst
- Baker's velum
- bakkola
- BAL
- balance
- balanic