| Answer | Crossword Clue |
|---|---|
| REVIVAL | New production of an old play |
| revivals | A new production of an old play or similar work |
| interleukin | any of a group of proteins that control the production of blood cells and play an important part in the combating of infection |
| interleukins | INTERLEUKIN, any of a group of proteins that control the production of blood cells and play an important part in the combating of infection |
| productivity | The rate of production of new biomass by an individual, population, or community; the fertility or capacity of a given habitat or area |
| CEL | An old Warner Bros. production? |
