Acid-fast staining was positive in all the 20 multibacillary leprosy cases, 18/30 paucibacillary leprosy cases.
20例多菌型麻风的抗酸染色全部阳性，30例少菌型麻风中18例阳性。
Immunohistochemistry revealed that keratin staining was positive.
免疫组织化学证实角蛋白染色阳性。
Results PAPP-A staining was positive in 12 of 15 ruptured plaques, and negative in all unstable and stable plaques.
结果15块破裂斑块中有12例PAPP-A染色阳性，而所有不稳定斑块与稳定斑块PAPP-A染色均为阴性。
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