Seeing Cells
Science images are becoming commonplace on social networks. But how are these beautiful, artistic images made and what use are they in research? Human cells stained and probed for DNA, actin and protein. I (Heather Doran) took this image - please don't reuse it. I've taken quite a few images throughout my PhD. So many my university computer struggles under the weight of them. I've been taking microscopic images of cells to understand how the cell cytoskeleton allows them to move. And it has been one of the most interesting and favourite parts of my PhD project. There are a number of ways of creating these images. The images all represent one or two components of the cell. Cells need to be fixed (in a fixative, like methanol or paraformaldehyde, to preserve them and the proteins and structures inside the cell). Different fixatives can be used depending on what it is you are looking for and how you are looking for it. Fixatives stop all movement, any re