How to Make a Blood Smear Slide
Some liquids are either too deeply colored or too thick to view using the wet mount technique. Blood and semen are prepared as smears. Evenly smearing the sample across the slide makes it possible to distinguish individual cells. While making a smear isn’t complicated, getting an even layer takes practice.
Place a small drop of a liquid sample onto the slide.
Take a second clean slide. Hold it at an angle to the first slide. Use the edge of this slide to touch the drop. Capillary action will draw the liquid into a line where the flat edge of the second slide touches the first slide. Evenly draw the second slide across the surface of the first slide, creating a smear. It’s not necessary to apply pressure.
At this point, either allow the slide to dry so that it can be stained or else place a coverslip on top of the smear.
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Post time: Jul-21-2022