Zebrafish their larval stages. In 2011, the British Heart Foundation ran an advertising campaign publicising its intention to study the applicability of this ability to humans, stating that it aimed to raise £50 million in research funding. Zebrafish have also been found to regenerate photoreceptor cells and retinal neurons following injury, which has been shown to be mediated by the dedifferentiation and proliferation of Müller glia. Researchers frequently amputate the dorsal and ventral tail fins and analyze their regrowth to test for mutations. It has been found that histone demethylation occurs at the site of the amputation, switching the zebrafish's cells
In the Heart of the Beast Puppet and Mask Theatre In the Heart of the Beast Puppet and Mask Theatre In the Heart of the Beast Puppet and Mask Theatre (also known as Heart of the Beast or HOBT) is a puppet company and nonprofit organization from Minneapolis, Minnesota. The company has written and performed scores of full-length puppet plays, performed throughout the US, Canada, Korea, and Haiti and toured the Mississippi River from end to end. The theatre is best known for sponsoring the annual May Day Parade and Ceremony that is seen by as many as 50,000 people each year. HOBT began in 1973 as Powderhorn Puppet Theatre,