Gel Diffusion

Gel diffusion is a laboratory technique used to separate and identify molecules based on their size and shape. It involves placing a sample of a mixture of molecules onto a gel-like medium, then allowing the molecules to diffuse throughout the medium. Molecules diffuse until they reach a point of equilibrium, where their diffusion is equal in both directions. The rate at which the molecules diffuse is directly proportional to their size and shape. As such, the larger and more irregularly-shaped molecules will diffuse more slowly than the smaller and more regularly-shaped ones, resulting in the separation of the components of the sample. Gel diffusion is a useful tool for researchers to analyze the size and shape of proteins, viruses, and other biological molecules. Additionally, the technique can be used to study the interactions between molecules and to investigate the effects of environmental conditions on their diffusion.