这类细菌之所以被如此命名是因为他们和革兰氏阳性菌相比不能吸收淡紫色的染料。
Such organisms are so named because they don't pick up the purplish dye used in the test to distinguish them from gram-positive bacteria.
革兰氏阴性菌(如蓝细菌)则会褪色，但可以被其他染料复染，如碱性藏红、品红或中性红。
Gram negative bacteria (e. g. Cyanobacteria) are decolorized, and may be counterstained with other dyes, such as safranin, carbol fuchsin, neutral red.
染料的水溶液及染色后的腈纶纤维对以金黄色葡萄球菌和大肠杆菌为代表的革兰氏阳性菌及革兰氏阴性菌有杀灭或抑制作用。
The dye water solution and dyed acrylic fibre can kill or suppress Gram-positive bacteria and Gram-negative bacteria like Staphylococcus aureus and Escherichia coli.
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