| TRACEELEMENT | Essential bodily substance present in small amounts (5,7) |
| BLOOD | Essential bodily fluid - Ponder (upon) persistently (5) |
| THINONTHEGROUND | Dinner though not cooked is present in small amounts (4,2,3,6) |
| SPECULATIONS | Risky investments for university with share starting off in what glasses company is producing, in small amounts (12) |
| THC | Psychoactive substance present in marijuana. |
| MALIC | Substance present in unripe apples, mountain ash berries, etc. (5,4) |
| ACID | Substance present in unripe apples, mountain ash berries, etc. (5,4) |
| NUCLEIC | ____ acid, a complex organic substance present in living cells (7) |
| TUNICIN | Animal cellulose; a substance present in the mantle, or tunic, of the Tunicates (7) |
| PECTIN | From the Greek for "congealed", a substance present in citruses, crab-apples, currants, gooseberries, quinces, plums, unripe blackberries and other fruits, traditionally used for setting jams and jell |
| PROTEINS | Complex substances present in all living organisms that have great nutritional value (8) |
| SNOWDROP | Plant at present in small sink (8) |
| EARWAX | Bodily substance also called cerumen (6) |
| MUTAGEN | Bodily substance that could give men a gut (7) |
| ELBOWGREASE | An apparent bodily substance representing vigorous work |
| ENZYME | Bodily substance acting as a catalyst |
| HORMONE | Tailless insect absorbs second bodily substance (7) |
| MUCUS | Bodily substance that moistens and protect (5) |
| HAEM | Bodily substance |
| TRACEELEMENTS | They're in the body in small amounts, but they're essential (5,8) |