Cells are the “building blocks” of life and our bodies. We cannot normally see them because they are far smaller than our eyes can perceive: Ten thousand can fit on the head of a needle pin! A human body contains 37.2 trillion cells. They connect together to create different types of tissues, like your skin, and they can build complex organs like your brain, or your liver. You will need a light microscope to see those tissues. Doctors can look at them and see if the tissue is healthy or affected by a disease. In cancer, cells forget their normal functions and just start to replicate faster. They will look different: their shape and sizes will become more irregular, and their nuclei will be larger.
So what makes those cells act differently? For that, we need to look deeper inside those building blocks, with an instrument called the Electron Microscope.
This coloring book contains images that amazingly enlarge one cell at a time, and can even show the small organelles inside them. It takes thousands of images to verify important information, such as the difference between cancerous and healthy cells.