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
Living in the Heart of the Beast of a wide range of instruments gives the song a "genuinely orchestral sound" evoking shades of Stravinsky, Varèse, Messiaen and Weill. MacDonald concluded that "Living in the Heart of the Beast" demonstrates that Henry Cow "could be said to be the only genuine rock/classical fusion since <nowiki>[</nowiki>Frank Zappa's] "Uncle Meat"". "Living in the Heart of the Beast" was performed by Henry Cow at a number of their concerts between 1975 and 1977, including: Living in the Heart of the Beast "Living in the Heart of the Beast" is the title of an extended song written by Tim Hodgkinson in 1975