The Doctor administers the graft but later discovers the body is rejecting it due to an improperly administered chemical. The Doctor first accuses Kes of making a mistake before starting to alert Lieutenant Tuvok of an attempted murder, but Pel stops him.
The Doctor administers a graft that later triggers rejection because of incorrect chemical use. Initially, the Doctor suspects Kes of making a mistake before informing Lieutenant Tuvok about attempted murder, though Pel intervenes.