| LAMBSLETTUCE | ... but a stem cell could become salad ingredient (5,7) |
| REEVE | Actor turned stem-cell research activist as a result of the accident that left him a quadriplegic, C |
| LABS | Places for stem cell research |
| GENETICENGINEER | Stem cell researcher, e.g. |
| EMBRYO | Stem cell source, at times |
| SYSTEM | 2 Way of working in classy stem-cell research |
| ECTODERMS | Embryonic layers developing stem cell without lines and rod |
| LINE | Stem cell group |
| HAECKEL | Scientific artist who coined the terms ecology and stem cell, and illustrated his microscopic findings in Artforms in Nature (7) |
| PILLAR | A space-occupying substance or thing, such as a present placed in a Christmas stocking, a stem of foliage/greenery incorporated into a bouquet or the tobacco in a cigar (6) |
| SPEAR | A fizgig; a gavelock for throwing or thrusting; a soldier armed with such a weapon; or, a stem of asparagus, broccoli, grass or okra (5) |
| TRUNK | Could be part of a body in a stem of a tree |
| BIER | A frame on which a corpse is placed 17A musical pipe made from a stem with a hollow |
| ANODE | Sounds like a joint of a stem, but is in fact an electrode by which current enters a battery (5) |
| BIND | A tie in music; a stem of a twiner such as the hop; or, a nuisance (4) |
| AXIL | From Latin for "armpit", word for the angle between a leaf-stalk and a stem or a branch and a tree's trunk (4) |
| TUBER | A thickened underground part of a stem, e.g. in a potato (5) |
| GOBLET | A drinking glass with a stem and a base (6) |
| NODE | A place where a leaf is attached to a stem (4) |
| SPADES | Suit of cards marked with a black symbol resembling a cordate leaf with a stem (6) |
