[ˈbaiˌveilənt]
①二价的：同divalent；②二价染色体：在首次有丝分裂前期的偶线期和粗线期，一对同源染色体沿其长联会而形成的结构，该染色体对的每一染色体在粗线期分离为两条姐妹染色单体后，即称为四分体(tetrad)- Masset's test
- masseur
- masseuse
- massicot
- massive
- Masson stain
- massotherapy
- MAST
- mastadenitis
- mastadenoma
- Mastadenovirus
- mastalgia
- mastatrophia
- mastatrophy
- mastauxe
- mastectomy
- Master "2-step" exercise test
- masthelcosis
- mastic
- mastication
- masticatory
- Mastigomycotina
- Mastigophora
- mastigophoran
- mastigophorous