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)