Scientists have found out who, besides lizards, is able to grow body parts

An interdisciplinary team of scientists used advanced imaging techniques and found that tails

alligators are complex structures with a centralskeleton. They are made up of cartilage surrounded by connective tissue that is intertwined with blood vessels and nerves. Research results published in the journal Scientific Reports.

It turned out that the overgrown tail of the Americanalligator shows signs of regeneration and wound healing within the same structure. The regeneration of cartilage, blood vessels, nerves, and scales is very similar to the regeneration of a lizard's tail.

In addition, scientists have discovered a scar-likeconnective tissue instead of skeletal muscle in the regrown alligator tail. Future comparative studies of different types of reptiles will be important to understand why regenerative capacity differs in different groups of animals, the scientists note.

Alligators, lizards and humans belong to the groupanimals with a spine - amniotes. Scientists have previously studied the ability of lizards to regenerate their tails, but the discovery of complex new tails regrowth in alligators provides additional insight into the regeneration process in all amniotes.

The regrown alligator tail is different fromoriginal. The regrown scales are densely located, the dorsal shields are absent (top right). An unsegmented cartilaginous tube (yellow) replaces the bone (yellowish brown) in the regrown tail. In addition, the regrown tail lacks skeletal muscle (red) and instead contains a large amount of fibrous connective tissue (pink). Credit: Arizona State University

“If we understand how different animals are capable ofto repair and regenerate tissue, this knowledge can then be used to develop treatments for various diseases, ”said Rebecca Fisher, study co-author and professor at the University of Arizona College of Medicine at Phoenix. The researchers hope their findings will help open up new therapeutic approaches to treating injuries and diseases such as arthritis.

Read also

Scientists have identified the cause of the explosion in Beirut on social networks

Scientists have studied how COVID-19 is transmitted indoors

From January 1, all smartphones must have 16 Russian applications