The untreated skin does not show any metachromatic staining 其它未用药的皮肤区域无染色。
2.
Metachromatic granules contain rna and polyphosphates they are deeply stained with aniline dyes 。 they are characteristic features of the corynebacteria 异染颗粒含rna和多聚磷酸盐。用苯胺染料可浓染。是棒状杆菌的特点。
