Toward the end, Dan and Roz talk at a table in the cafeteria. After Roz says, "No, we're not gonna do that this time, Dan", she sits back down. Starting here, her hands switch between being flat on the table, curled like a fist, and folded on the table. There are also subtle changes in people in the background.
On the roof when Dan takes the syringe from the doctor the cap is on. When the camera angle changes, it's gone.