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In this video we will explore the microscopic structure of bone or the Harvesian system in depth. Discover the difference between spongy and compact bone, learn about the function of …

The different components that make up blood. Plasma, white blood cells, red blood cells, platelets.

In most cases, the part of a cell or tissue that we want to look at isn't naturally fluorescent, and instead must be labeled with a fluorescent dye or tag before it goes on the microscope.

It might look something like this if you were to look in a microscope. It's unlikely to be magenta but it's gonna have kind of that classic chromosome shape that you're used to seeing in textbooks.

So if we look at our muscle cells under a microscope, we'll see that they've got these striations on them, these bands, because remember, another name for skeletal muscle is striated skeletal …

The colors come from fluorescent (light-producing) dyes that are used to label different molecules in the specimen. Scientists use fluorescence microscopes to observe the role of specific cell …

Explore the differences between animal and plant cells, including their parts and functions, with this educational video on Khan Academy.

They're very large at an atomic level but each of these circles are still atoms, so you would still need a very, very, very, very powerful microscope to even to take a look at even some of the …

Explore the structure and function of chloroplasts and mitochondria, key organelles in energy conversion and cellular processes, on Khan Academy.