Let's take a look at how to observe cells under ... a microscope. But don't worry if you don't have one of your own. Ask your school if they have one you can use. Then you'll need an onion.

Dr. James Lim, associate professor of pediatrics at UBC’s faculty of medicine, observes pediatric cancer cells grown in a chicken egg under a microscope. Disclaimer: AAAS and EurekAlert!