| Answer | Crossword Clue |
|---|---|
| trypsinogen | the inactive substance from which trypsin is formed in the duodenum |
| trypsinogens | TRYPSINOGEN, the inactive substance from which trypsin is formed in the duodenum |
| trypsinogen | An inactive substance secreted by the pancreas, from which the digestive enzyme trypsin is formed in the duodenum |
| osteogen | a substance from which bone is formed |
| osteogens | OSTEOGEN, a substance from which bone is formed |
| precursors | A substance from which another is formed, esp. by metabolic reaction |
