When Scully is in the hospital saying goodbye to her friend she is wearing a cross necklace. In the next scene where she is in the courtyard, she is no longer wearing it.
After Scully walks into the wrong hospital room, she looks up at the room numbers down the hall. The directional sign outside her intended destination (306) reads ELEVATORS and PULMINARY (sic) CARE. Once inside Room 306, the directional sign behind her now reads X-RAY and POST-OP RECOVERY.
At 13:08 the sign in the hospital corridor has pulmonary misspelled.
You can see the string pulling the apothecary sign.
When Scully is reanimating her friend in the hospital, when the camera rotates and the scene becomes visible from behind Scully, you can see a hand of a crew member.