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<div id='article-page'><div id='article-content' data-media-url='//news-app-staging.s3.amazonaws.com' data-base-url='//news-app-staging.herokuapp.com' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/1629/heart_muscle.m4a' data-capture-url='//staging.analytics.lingraphica.com/events/capture_news' data-article-title='Regrowth of Heart Muscle May Be Possible' data-article-id='2147'><script src='//news-app-staging.herokuapp.com/javascripts/getscripts.js'></script><link rel='stylesheet' href='//news-app-staging.herokuapp.com/stylesheets/article.css' type='text/css' /><div class='article'><p><span data-start-time='0' data-end-time='6021'>It may seem like a moment in a science fiction movie.</span> <span data-start-time='6021' data-end-time='14875'>In a fierce battle, a creature loses an arm but, then, grows another one to take its place.</span> <span data-start-time='14875' data-end-time='18917'>However, this is not science fiction.</span> <span data-start-time='18917' data-end-time='21646'>It is scientific fact.</span> <span data-start-time='21646' data-end-time='31667'>Some fish and amphibians, such as salamanders, can regrow lost limbs and organs.</span> <span data-start-time='31667' data-end-time='40479'>As mammals evolved they lost the ability to regrow, or regenerate, parts of their body.</span> <span data-start-time='40479' data-end-time='48563'>However, experiments show that it may be possible to regain that ability.</span> <span data-start-time='48563' data-end-time='53521'>Tropical freshwater zebrafish are popular pets.</span> <span data-start-time='53521' data-end-time='57958'>They are also popular as lab animals.</span> <span data-start-time='57958' data-end-time='63083'>Their embryos are clear, or translucent.</span> <span data-start-time='63083' data-end-time='68708'>They can regrow damaged fins, skin and hearts.</span> <span data-start-time='68708' data-end-time='74333'>Zebrafish are also genetically similar to humans.</span> <span data-start-time='74333' data-end-time='90292'>In 2013, the website Sci-News reported that researchers had found that 70 per cent of &ldquo;protein-coding human genes&rdquo; are related to genes found in the zebrafish.</span> <span data-start-time='90292' data-end-time='109229'>The report also said that researchers at the Wellcome Trust Sanger Institute in Britain also found that 84 per cent of genes known to be connected to human disease have a zebrafish counterpart.</span> <span data-start-time='109229' data-end-time='115917'>These researchers published their findings in the scientific journal Nature.</span> </p></div><div class='control-buttons-sticky' style='display:none;'><div class='control-buttons'><button title='Back' class='back' disabled='disabled'></button><button title='Play' class='play' disabled='disabled'></button><button title='Pause' class='pause' style='display:none;'></button><button title='Forward' class='forward' disabled='disabled'></button><button class='finished-reading' style='display:none;'>Done</button></div></div></div><div id='article-media'><div id='media-image'><img src='https://news-app-production.s3.amazonaws.com/articles/1629/heart_muscle.jpg'/></div></div><div id='question-content' style='display:none;'><div class='vocabulary_question question-container' data-question-id=7950 data-hint-location='31667' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/1629/what_does_regenerate_mean.m4a'>What does regenerate mean?</div><div class='choices' data-correct-choice='to regrow after being lost'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/1629/to_be_popular.m4a'><span>to be popular</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/1629/to_regrow_after_being_lost.m4a'><span>to regrow after being lost</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/1629/to_be_connected.m4a'><span>to be connected</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/1629/to_lose_a_limb.m4a'><span>to lose a limb</span></div></div></div><div class='multiple_choice_question question-container' data-question-id=7951 data-hint-location='21646' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/1629/which_animals_can_regrow_lost_limbs.m4a'>Which animals can regrow lost limbs?</div><div class='choices' data-correct-choice='fish'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/1629/scientists.m4a'><span>scientists</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/1629/spiders.m4a'><span>spiders</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/1629/fish.m4a'><span>fish</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/1629/humans.m4a'><span>humans</span></div></div></div><div class='sentence_completion_question question-container' data-question-id=7952 data-hint-location='31667' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/1629/as_mammals__blank__they_lost_the_ability_to_regrow_parts_of_their_body.m4a'>As mammals <span class='blank'>evolved</span> they lost the ability to regrow parts of their body.</div><div class='choices' data-correct-choice='evolved'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/1629/became_popular.m4a'><span>became popular</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/1629/became_fish.m4a'><span>became fish</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/1629/died.m4a'><span>died</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/1629/evolved.m4a'><span>evolved</span></div></div></div><div class='question-buttons'><button class='skip-button'></button><button class='hint-button'></button><button class='speak-button'></button></div></div></div>

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