During the scene set in the subway the same female extra with long red hair can be seen walking past the main actors in a number of conflicting directions a number of times.
When police are questioning a suspect, Henry Morgan has them ask the suspect if the Ribowsky method was used when removing the pituitary gland [this method does not exist]. The medical advisor on the show is Shiya Ribowsky.
Henry mispronounces the term "prion" (a disease agent smaller than a virus). It's "pree-on," not "pry-on."