Mounting Adult Drosophila Brains: A Method to Prepare Slides for Confocal Imaging
내레이션 대본
– On a positively-charged microscope slide, adhere two cover slips with enough distance between them 세스 create a space for the Drosophila brains 세스 be mounted. Under the stereo microscope, pipette the brains in mounting medium into that space. The negative charge of the tissue will help the brains adhere 세스 the positive charge on the surface of the slide.
Remove excess mounting medium 세스 allow for precise positioning of the brains on the slide in a grid pattern with the antennal lobes facing up, then bridge the two cover slips by adhering a third cover slip across 세스 cover the brains.
To fill in the cavity, place mounting medium one drop at a time into the edge of the cavity, and allow it 세스 spread by capillary motion so that it does not disturb the brains.
Seal the cavity with nail polish, and store at negative 20 degrees Celsius in the dark 세스 preserve the fluorescence of stained tissues.
In the example protocol, we will mount Drosophila brains for confocal imaging of immunostained neurons.
– To mount the brains, build a bridge slide. Position two base covers slips roughly one centimeter apart on a positively-charged slide. Make certain that the positively-charged side is face up. Then adhere the cover slips 세스 the slide with fingernail polish, and let the polish dry completely before proceeding.
Next, place the slide under a stereo microscope and pipette brains in medium into the space between the cover slips. Be sure 세스 adjust the lighting 세스 improve visualization of the brains.
Next, aspirate the extra mounting media from the slide, being careful 세스 avoid the brains. Then, wick away remaining excess mounting media. This will allow the brains 세스 be positioned more precisely. Now, using forceps, orient the brains into a grid pattern with their antennal lobes facing up.
Then, place a cover slip over the brains, and use fingernail polish 세스 seal the edges of the top cover slip that are attached 세스 the base cover slips.
Now, load the center cavity with fresh mounting media drop-wise, allowing the media 세스 be drawn under the cover slip by capillary action. When the cavity is filled, seal it in completely using clear fingernail polish.
