KIEV, June 20 ??“ Doctors will give a high dose of dioxin to mice to see when will the poisoning trigger first symptoms as part of an investigation into the poisoning of Viktor Yushchenko, his doctor said Monday.

The tests will give investigators an important timeframe that can be deducted from when Yushchenko??™s first symptoms had appeared to figure out the exact time of the poisoning, Mykola Korpan, the doctor who is treating Yushchenko, said.