| Clue | Source | Date |
|---|---|---|
| Membranes surrounding the spinal cord (3,5) | The Guardian Weekend | 18 Apr 2026 |
| The innermost of the three membranes that cover the brain and spinal cord | ||
| Letter in Greek sent to a parent concerning vascular membrane (8) | ||
| Membrane found defective in a primate | The Telegraph Toughie | 21 Apr 2020 |
| Brain membrane | ||
| Membrane around the brain |