counterstain

【化】 复染色; 对比染色
【医】 复染剂

动词过去式:counterstained 过去分词:counterstained 现在分词:counterstaining 第三人称单数:counterstains 

coun.ter.stain

n.（名词）
A stain of a contrasting color used to color the components in a microscopic specimen that are not made visible by the principal stain.
对比染色剂，对照染色剂：一种对比颜色的染色剂，用来染制主染色剂染后显不出的显微术标本成分
v.tr.（及物动词）
coun.ter.stained,coun.ter.stain.ing,coun.ter.stains
To color (a microscopic specimen) with such a stain.
用对比染色剂染（显微术样本）