Von diesen starben fünf innerhalb von zwei Jahren, was ungewöhnlich ist, da nach Studien über tausende normale Sprague-Dawley-Ratten in diesem Zeitraum etwa 50% hätten sterben müssen.
Of these, five died within two years, which is unusual, because studies of thousands of untreated Sprague-Dawley rats show that about half should have died in that period.