sentences:  Journalists of "Novaya Gazeta" managed to send his tissue specimens to "major foreign specialists".The experts did not reach any definite conclusion.This caused widespread speculation about the cause of his death, especially since another member of the Kovalev commission, Sergei Yushenkov, was assassinated the same year and the legal counsel and investigator of the commission, Mikhail Trepashkin, was arrested by Russian authorities.