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.

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 osteons, and …

It's sometimes difficult to draw diagrams in biology! Remembering all those labels can be tricky! In this video, we're going to use a memory device to learn about the different parts of a dicot stem under a …

If you prick your finger or scrape your knee, you'll see some droplets of blood form. Just by eye, these droplets may seem to be made of uniform red liquid, similar to food coloring or paint. However, if you …

Learn about the phases of mitosis, a process where a single cell divides into two identical daughter cells, essential for growth and repair.

The great majority of the cell divisions that happen in your body involve mitosis. During development and growth, mitosis populates an organism’s body with cells, and throughout an organism’s life, it …

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 muscle.

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It got that word because when people first started looking in the nucleus of a cell, they would apply dye, and these things that we call chromosomes would take up the dye so that we could see it well with a …

And because that looks smooth through our microscope, it has been called, you can imagine, smooth endoplasmic reticulum. There are things known as golgi bodies. Once again, another fascinating …