_:vb50951686 . _:vb50951686 . _:vb50951686 . _:vb50951686 "url:http://en.wikipedia.org/wiki/Rhabdomyosarcoma"^^ . _:vb50951686 "A skeletal muscle cancer that arise from skeletal muscle progenitors."^^ . _:vb50951686 . _:vb50951686 .