A microscope allows the human eye to examine tiny particles that otherwise cannot be seen.
These are tiny creatures that most likely cannot be seen with the naked eye. They have to be seen by microscope. Most of these creatures are a bacteria or virus.
a capillary
A germ is so tiny, it cannot be seen by the human eye, you need a microscope to see it. IT IS 1/1000 OF A MILLIMETER
Capillary
It is a vein.
another vessel is at anchor
Some uses are: 1) to see bacteria or fungus which cannot be seen by a naked eye 2) to observe tiny creatures
an artery, a vein, a capillary net, and a lacteal (a tiny lymph vessel)
fibrin
Leeks!
air cannot be seen because it is colourless