There's no simple way to simply copy and paste stuff. if you're interested - check the page.
Purpose: The purpose of this study was to demonstrate that the organized formation of subretinal drusenoid deposits (SDDs) may be a Turing pattern. Methods: A Java-based computational model of an inferred reaction-diffusion system using paired partial differential equations was used to create topographic images. Reaction kinetics were varied to...
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What is a simple reaction-diffusion system?
Reaction diffusion systems describe the way things mix. Think of oil and water and how if they start mixed they will separate; a system would describes how that happens. More fun systems can create the sort of patterns you see in the examples and they show up all over the place.