 According to witness testimonies, the victim changed physically, became shorter, weakened quickly, became calm and silent, and died within fifteen minutes.Mairanovsky brought to the laboratory people of varied physical condition and ages in order to have a more complete picture about the action of each poison.Pavel Sudoplatov and Nahum Eitingon approved special equipment (i.e., poisons) only if it had been tested on "humans", according to testimony of Mikhail Filimonov.