Double-headed planaria regenerates can be induced by exposing amputated fragments to electrical fields. Electrical field exposure with opposite polarity can induce a planarian with two tails.

One animal out of 15 regenerated into a double‐headed phenotype—normally an extremely rare event. Remarkably, amputating this double‐headed worm again, in plain water, resulted again in the double‐headed phenotype.

Jun 19, 2017 · Planaria are flatworms that can regrow all of their body parts, even when cut into separate head, pharynx and tail segments, making them a popular model for regeneration studies. Now Junji...

Jul 15, 2017 · Recently, reality become eerily similar to the myth of the hydra when a regenerating planarian flatworm (D. japonica) sent to space returned to Earth with two heads. During regeneration, development, and cancer suppression, body patterning mechanisms are subject to the influence of physical forces…

Jun 16, 2017 · Experiments in space have given researchers insights into how regeneration works and how space flight could affect human biology, and it starts with the planarian worm. What are planaria?

After Petersen blocked the gene, only heads regrew in the place of tails, forming two-headed planaria. Investigating further, Petersen and Reddien found that in planaria with their tails cut off, the wntP-1 gene triggers beta-catenin , which activates the wntP-2 gene.

Two-headed planarian while its genes were messed up. You may ask what will happen if these genes go wrong. You can see the image below – it regenerated into a two-headed planarian! [In this image] Two planarians from the same species. …

Jun 13, 2017 · Planarian flatworms (Dugesia japonica) are very flat and tiny, measuring about 0.2 to 0.4 inches (0.5 to 1 centimeter) in length, study co-author Michael Levin, a professor of biology at Tufts...

Nov 19, 2018 · When part of a planarian is cut off, its neoblasts multiply to make more stem cells. Some of these stem cells then differentiate into the cells needed to regrow the missing body parts. These images show how planarians cut in different ways regenerate over time.

May 23, 2017 · Researchers have succeeded in permanently rewriting flatworms' regenerative body shape by resetting their internal bioelectric pattern memory, causing even normal-appearing flatworms to harbor the...