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JoVE Encyclopedia of Experiments
Biology
安装成体果蝇大脑:一种为共聚焦成像准备载玻片的方法
安装成体果蝇大脑:一种为共聚焦成像准备载玻片的方法
Encyclopedia of Experiments
Biology
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Encyclopedia of Experiments Biology
Mounting Adult Drosophila Brains: A Method to Prepare Slides for Confocal Imaging

安装成体果蝇大脑:一种为共聚焦成像准备载玻片的方法

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4,772 Views
02:57 min
April 30, 2023
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Please note that some of the translations on this page are AI generated. Click here for the English version.

Transcript

- 在带正电的显微镜载玻片上,粘贴两个盖玻片,它们之间有足够的距离,为安装果蝇大脑创造一个空间。在立体显微镜下,将封固介质中的大脑移液到该空间。组织的负电荷将帮助大脑粘附在载玻片表面的正电荷上。

去除多余的安装介质,以允许大脑以网格状精确定位在载玻片上,触角叶朝上,然后通过粘贴第三个盖玻片来桥接两个盖玻片以覆盖大脑。

要填充空腔,请将封固剂一次一滴放入空腔边缘,并使其通过毛细管运动扩散,以免干扰大脑。

用指甲油密封腔体,并在零下 20 摄氏度的黑暗中储存,以保持染色组织的荧光。

在示例协议中,我们将安装果蝇大脑,用于免疫染色神经元的共聚焦成像。

- 要安装大脑,请构建一个桥式滑梯。将两个基盖在带正电的载玻片上相距约 1 厘米的位置。确保带正电的一面朝上。然后用指甲油将盖玻片粘在载玻片上,让抛光剂完全干燥后再继续。

接下来,将载玻片置于立体显微镜下,将培养基中的大脑移液到盖玻片之间的空间中。请务必调整照明以改善大脑的可视化。

接下来,从载玻片中吸出额外的封固剂,小心避开大脑。然后,吸走剩余的多余封固剂。这将使大脑能够更精确地定位。现在,使用镊子将大脑定向成网格状,触角叶朝上。

然后,将盖玻片放在大脑上,并使用指甲油密封附着在基盖玻片上的顶盖玻片的边缘。

现在,用新的封片剂逐滴加载中心腔,通过毛细管作用将介质吸入盖玻片下方。填充空腔后,使用透明指甲油将其完全密封。

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