The techniques described in this book provide an alternative method to understanding cellular biological structures and processes. Molecular genetic methods mainly analyse single molecules or very small cellular parts, which does not necessarily enhance our understanding of the fundamental cellular processes. However, using techniques such as atomic force or infrared microscopy, neutron reflection, stopped-flow cytometry, laser microscopy, or biosensoric-based electronics, it is possible to study cells and biological systems in their entirety. Physiological processes of cells, such as movement, development, plasticity, regeneration and communication, can be visualized using the high precision biophysical techniques described here.