Continuity: When Dr. Dubenko is explaining a chemical reaction to the other doctors he starts to write on the wall. In the first shot he writes the following: 2H+ + H then the camera focuses on his audience and we hear continuing writing, then the camera cuts back to Dubenko when on the wall the following is written: 2H+ -> A.

Continuity: Early in this episode when Dr. Kovac is shaving in the bathroom, the shaving foam on his skin is changing during shots, most noticeably in the region of his ear.