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PAS染色法

PAS染色法Periodic Acid-Schiff stain)在組織學上,主要用來檢測組織中的醣類,過碘酸把醣類相鄰兩個碳上的羥基氧化成醛基,再用Schiff試劑和醛基反應使呈現紫紅色。通常用於黴菌病檢體組織切片染色的方法。

配製

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固定液

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可使用Carnoy液(純酒精24mL+冰醋酸4mL+氯仿12mL)

染色液

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配製過碘酸酒精溶液

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過碘酸(HIO4)0.4g + 95%酒精 35ml + 0.2M醋酸鈉溶液 5mL+ 蒸餾水10mL,用棕色瓶保存在冰箱裡,保存期限兩周。

配製Schiff氏溶液

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0.5克鹼性品红加入100毫升蒸餾水中,不停搖動混合5分鐘,使之充分溶解。冷卻到50℃後過濾,並加入10mL 1N 鹽酸溶液,冷卻到25℃,加入0.5-1g焦亞硫酸鈉,在室溫中至少静置24小時,然後密封冰箱保存。

混合

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將配好的Schiff氏液 11.5ml 與1N 鹽酸溶液0.5ml 以及純酒精23ml 混合。亞硫酸溶液1%焦亞硫酸鈉溶液 10mL +1N 鹽酸溶液 10mL+ 蒸餾水 180mL。

相關條目

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外部連結

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PAS染色法
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