We can all be on the same page about the thought that Prehistoric Dinosaurs are descendants of the more modern Reptiles of our time. Species like the Gecko have an uncanny ability to regenerate their tail after about weeks. Fully intact with no visible boundaries of new to old flesh. It's too bad we cannot regenerate, for instance, a limb.
The tough part to figure out is how Reptiles can manage a process like that. This is where the physiological aspect of their bodies gets interesting.
Common enough, Geckos tend to be the Reptile that becomes observed. They tend to be vastly more adaptable with their ability to regenerate.
After observing wounds and scar development, it was studied by a University in Canada that both were undergoing the same molecular process. What was measured was the levels of Vascular Endothelial Growth Factor(VEGF) that was existent in various layers of the skin. All happening at different stages of its healing. These cells stimulate the blood vessels during the moment of trauma. In Mammals, it is likely to take up to a Year to scarify and cause limited flexibility in the. With the Geckos, there will be no scar of defining marks of a wound due to the increase in blood vessel creation.
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