软水蛭属：为蛭纲 (Hiru-dinea)颚蛭科(Gnathobdellidae)的一属
习惯用语Limnatis nilotica
尼罗河水蛭：在北非，中欧和近东一带的一种水蛭，通常用以吸血。它们有时寄生在哺乳动物鼻道、咽和喉，大量存在时可导致贫血和窒息- alcaptonuric
- alcium
- alclofenac
- Alcmaeon of Crotona
- Alcock's canal
- alcogel
- alcohol
- alcohol dehydrogenase
- alcoholemia
- alcoholic
- alcoholism
- alcoholization
- alcoholize
- alcoholometer
- alcoholuria
- alcoholysis
- alcosol
- alcuronium chloride
- Aldactazide
- Aldactone
- aldehydase
- aldehyde
- aldehyde-lyase
- aldehyde oxidase
- aldehyde reductase