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从脑组织样本开始,由于存在色素和脂质,该样本是不透明的。这些成分在荧光标记的神经元中引起光散射。
将组织依次孵育在甲醇浓度增加的溶液中,以去除其中的水分并逐渐使组织脱水。
然后,用浓甲醇处理该组织以消除残留的水分,确保完全脱水。
接下来,将组织转移到含有二氯甲烷和甲醇的初始透明溶剂中。
轻轻摇晃孵育,使溶剂深入渗透组织。
二氯甲烷可去除组织中的色素和脂质,减少光散射并提高透明度。
最后,将组织转移到疏水溶剂二苄基醚中,并在不摇晃的情况下孵育。
溶剂充当最终的透明剂,进一步提高组织透明度。
这个过程提高了光穿透性,使标记的神经元及其在脑组织中的连接能够更清晰地可视化样本。
在室温下将样品在 20%、40%、60%、80% 和 100% 甲醇中连续孵育一小时。然后,将其在新鲜的 100% 甲醇中孵育过夜。第二天,将样品在室温下在室温下摇动,在新鲜制备的66%DCM中的33%甲醇中孵育3小时。三小时后,将样品在二苄醚中孵育,不要摇动直至透明。然后,将其储存在二苄基醚中直至成像。
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