单词	hematein
释义	hematein /ˌhēməˈtē-in/ /ˈhēməˌtēn / noun A reddish-brown crystalline dye obtained from logwood and used as a stain and indicator. Chemical formula C16H12O6. The extract from the heartwood is not a dye until it undergoes oxidation into hematein, which is an acid chromogen.... Both hematoxylin and hematein are still commonly used for bacteriological and histological stains. This is the HCK S grade of hematein, manufactured to specific values for this important use.
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