| Answer | Crossword Clue |
|---|---|
| ALGEBRA | "Solve for x" subject |
| ALG | "Solve for x" subj. |
| UFO | Subject for an X-file |
| ALIEN | Subject for an X-file |
| ESP | Subject for The X-Files |
| INSIDES | X-ray subject |
| UFO | "X-Files" subject |
| UFO | X-File subject |
| ETS | "The X-Files" subject |
| CHEST | Popular X-ray subject |
| ALIEN | "The X-Files" subject |
| ETS | The X-Files subject |
| UFO | Subject of many X-Files |
