[prəuˈmetəˌfeiz]
前中期：有丝分裂的一期，一般始于核膜崩解时，以后在细胞中心可见到较为流动的带，染色体在其中自由移动并似杂乱地移向赤道- Bostock's catarrh (disease)
- Boston's sign
- bot
- Botallo's duct, foramen, ligament
- botanic
- botany
- botfly
- bothridium
- bothriocephaliasis
- Bothriocephalus
- bothrium
- bothropik
- Bothrops
- botogenin
- botryoid
- botryomycoma
- botryomycosis
- botryomycotic
- botryotherapy
- botrytimycosis
- Botrytis
- bots
- bottle
- botuliform
- botulin