词根词缀：leuco-, leuc-, -leucemia; leuko-, leuk-, -leukemia

【来源及含义】Greek: leukos, white; the primary meaning now is the color "white"; but it also includes the meanings of "light, clear, bright"

【相关词根词缀】Inter-related cross references, directly or indirectly, involving word units meaning "white": albo-; albumino-.

【同源单词】adipoleucocyte, aleukemia, aleukemic, aleukia, aleukocyte, aleukocytic

词根词缀：melano-, melan-, mela-, melen-

【来源及含义】Greek: the color black; dark

【相关词根词缀】Other related "dark; shadow, shade; black" units: lygo-; nigri-; nocti-; nycti-; scoto-; skio-; umbra-.

【同源单词】hepatomelanosis, leucomelanous, melancholia, melancholiac, melancholic, melancholy