Yahoo奇摩字典 網頁搜尋

  1. Gram stain

    • IPA[ˈɡram ˌstān]
    • n.
      a staining technique for the preliminary identification of bacteria, in which a violet dye is applied, followed by a decolorizing agent and then a red dye. The cell walls of certain bacteria (denoted Gram-positive) retain the first dye and appear violet, while those that lose it (denoted Gram-negative) appear red. Also called Gram's method.
    • noun: Gram stain