计算溶液所需的质量、体积或浓度。
BioReagent,生物染色剂,用于显微镜 级 ,适用于对基线干扰要求严格的色谱和分析工作流程。
避光,室温。常规运输 。请查阅批次 COA 获取详细规格。
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在色谱分析、有机合成和交叉偶联反应领域已被 20 篇同行评审文献引用。
实验室对于中性脂肪染色有多种方法,例如采用苏丹黑 B、苏丹Ⅱ、苏丹Ⅲ、苏丹Ⅳ、油红O法等。苏丹染料一般用于传统方法,现在偶氮染料油红O更适合用于脂肪的染色。油红O是一类很强的脂溶剂和染脂剂,它虽然与磷脂结合力稍差,但却较易和甘油三脂结合呈小脂滴状。苏丹黑B染色液的主要用途在于显示类脂质的异常沉着和组织器官的脂肪变性,以及肝、肾、心等实质脏器中经常发生的脂肪变性,细胞内出现多数中性脂肪滴;鉴别和诊断脂肪组织中所发生的肿瘤及其性质。实验过程中,标本不采用含有乙醇的固定液,如实际情况需要固定可以采用10%福尔马林,也不采用石蜡切片,需用碳蜡切片或冰冻切片。
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操作步骤(仅供参考):
1、新鲜组织低温切片,一般在温度-20℃~-25℃范围。如果实验样本为脂肪瘤,应调节温度至-30℃。
2、冰冻切片 5~10μm(6~8μm为佳),贴于载玻片上。
3、70%乙醇稍微浸洗一下。
4、放入Sudan black B stain浸染。
5、浓度为70%的乙醇洗去多余染液。
6、蒸馏水浸洗 1min。
7、加入 Nuclear fast red Stain 淡染细胞核。
8、(可选)镜下观察如染色过深,可用酸性分化液分化数秒。
9、自来水稍洗后,蒸馏水同样稍洗一下。
10、用滤纸吸去切片及周围的水分,让其稍微干燥。
11、甘油明胶或阿拉伯糖胶封固。
染色结果:
中性脂肪: 黑色
磷脂: 灰黑色
细胞核: 红色
注意事项:
1、标本不宜采用含有乙醇的固定液、也不宜用石蜡切片,需用冰冻切片。
2、在染色过程中为了防止染料发生沉淀。将切片入染液时应密封,请勿与流动空气相接触,避免溶液挥发时发生沉淀。
3、冰冻切片较易着色,Mayer苏木素复染时应避免过染。
4、苏丹染料容易褪色,应保存于密闭环境。
5、甘油明胶封固的样本,保存时间不长。如需长期保存,可以用中性树胶将盖玻片与载玻片交界的边缘封闭。
There are various methods for neutral fat staining in the laboratory, such as Sudan Black B, Sudan Ⅱ, Sudan Ⅲ, Sudan Ⅳ, and Oil Red O staining. Sudan dyes are generally used in traditional methods, while the azo dye Oil Red O is now more suitable for fat staining. Oil Red O is a highly effective lipid solvent and lipochrome; although its binding affinity to phospholipids is relatively weak, it readily binds to triglycerides to form small lipid droplets. Sudan Black B Stain is mainly used to demonstrate abnormal deposition of lipids, fatty degeneration of tissues and organs, as well as the fatty degeneration commonly occurring in parenchymal organs such as the liver, kidneys, and heart, where numerous neutral fat droplets appear within cells. It also aids in the identification and diagnosis of tumors arising in adipose tissue and their pathological properties. During the experiment, fixatives containing ethanol should not be used for specimens. If fixation is necessary, 10% formalin can be applied. In addition, paraffin sections are not recommended; instead, carbowax sections or frozen sections should be adopted.
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Operating Procedures (For Reference Only)
1. repare cryosections of fresh tissues at a temperature typically ranging from -20℃ to -25℃. For lipoma specimens, adjust the temperature to -30℃.
2. Cut frozen sections with a thickness of 5–10 μm (6–8 μm is optimal) and mount them on glass slides.
3. Rinse the sections briefly with 70% ethanol.
4. Immerse the sections in Sudan Black B Stain for staining.
5. Wash away excess stain with 70% ethanol.
6. Rinse the sections with distilled water for 1 minute.
7. Stain the cell nuclei lightly with Nuclear Fast Red Stain.
8. (Optional) If overstaining is observed under the microscope, differentiate the sections with acid differentiation solution for a few seconds.
9. Rinse briefly with tap water, followed by a quick rinse with distilled water.
10. Blot excess water from the sections and their surroundings with filter paper and allow them to air-dry slightly.
11. Mount the sections with glycerin jelly or gum arabic.
Staining Results
Neutral Fat: Black
Phospholipids Grayish: Black
Cell Nuclei: Red
Precautions
1. Do not use ethanol-containing fixatives or prepare paraffin sections for specimens; frozen sections are required.
2. To prevent dye precipitation during staining, seal the container when immersing sections in the stain. Avoid contact with flowing air to prevent precipitation caused by solvent evaporation.
3. Frozen sections stain easily. Avoid overstaining when counterstaining with Mayer's hematoxylin.
4. Sudan dyes are prone to fading and should be stored in a sealed environment.
5. Specimens mounted with glycerin jelly have a short shelf life. For long-term preservation, seal the edges between the coverslip and slide with neutral balsam.
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P281: 根据需要使用个人防护设备。
P203: 使用前,获取、阅读并遵守所有安全说明。
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| 批号(Lot Number) | 证书类型 | 货号 |
|---|---|---|
| 分析证书 | S1508362 | |
| 分析证书 | S1508362 |
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