SEM stands for scanning electron microscope. The SEM is a microscope that uses electrons instead of light to form an image. Since their development in the early 1950's, scanning electron microscopes ...

There's three types of microscope: light, like this one here, and two types of electron ... the cell, and that means some pretty amazing things can be seen. Here's an amoeba engulfing red blood ...

A red blood cell is much smaller than that. To allow us to see detail in these cells, we need the help of a microscope.

Every year, approximately 1.5 million red blood cell ... where we can keep the cells sterile. Cultured cells in incubator (source: NHSBT). Confocal mircroscopy image of an enucleating reticulocyte.