Microscopy is the technical field of using microscopes to view objects and areas of objects that cannot be seen with the naked eye.
When researchers started documenting the “animalcules,” otherwise known as microorganisms, in everything from drinking water to saliva, the realization that a miniature world existed.
With these discoveries, it led researchers to refine their lenses and microscopy techniques to get better magnification and higher image resolution
So your blood says a lot. More and more data is being discovered about human blood and how it functions in your body.