Alcohol can be used for fixing specimens, but is not commonly used for fixing bacteria.
The home laboratory provides a safe working environment for microscopic investigations.
Eukaryotes are significantly larger than prokaryotes.
Before specimens can be processed for making permanent slides, they may need to be fixed.
In this post I’d like to address some of the search queries that people typed to find this web site.
Phase Contrast microscopy makes specimens of low contrast appear with greater contrast.
It is possible to use non-toxic stains (such as ink for fountain pens) to stain yogurt bacteria in-vivo.
Here is yet another link to an article from Popular Science magazine.