[ˈspektrin]
红细胞定形素：红细胞细胞膜的胞浆表面血型糖蛋白上附着的一种收缩蛋白，据认为在决定红细胞的形状方面起重要作用- protonephron
- protonephros
- protoneuron
- protonitrate
- proto-oncogene
- Protopam
- protopathic
- protopecten
- protophyllin
- Protophyta
- protophyte
- protophytology
- protopine
- protoplasia
- protoplasm
- protoplasmatic
- protoplasmic
- protoplast
- protoporphyria
- protoporphyrin
- protoporphyrinogen oxidase
- protoporphyrinuria
- protoproteose
- protopsis
- protosalt