In most of this episode, Janine wore a spare uniform of Peter's.
This marks the first time that Janine has operated the containment unit herself.
Ray mentions adding another Klein Bottle to the Containment Unit. In mathematics, the Klein Bottle is a surface where notions of left and right can't be consistently defined.
Egon mentions the principle of Triage, the process of organizing severity of conditions by order and priority.
Janine quotes the theme song saying, "I ain't afraid of no ghosts."