Key Takeaways

KEY TAKEAWAYS

• There are several kinds of microorganisms that range from viruses to bacteria to multicellular pathogenic helminths. • The first microscopes were invented in the 1600s in Europe. • There are different types of light microscopy plus two different types of electron microscopy. • Scanning probe microscopy does not use light waves or electron waves. • There are positive stains and negative stains in light microscopy. • Electron microscopy stains usually involve heavy metals.