| Rating | Solver | Clue |
|---|---|---|
| HEART | Nucleus | |
| NUB | Nucleus | |
| CORE | Nucleus | |
| NUCLEI | Of Nucleus | |
| ENDOPLAST | See Nucleus. | |
| NUCLEUSES | Of Nucleus | |
| KARYON | Human nucleus | |
| CHROMOSOME | Cell nucleus component | |
| NUCLEOLUS | A little nucleus. | |
| NONNUCLEATED | Without a nucleus. | |
| INN | Initially neighbour- hood nucleus | |
| ELECTRON | Particle orbiting a nucleus | |
| NUCELLUS | See Nucleus, 3 (a). | |
| NUCLEATE | Having a nucleus; nucleated. | |
| ENDOBLAST | Entoblast; endoplast. See Nucleus, | |
| MESOBLAST | The cell nucleus; mesoplast. | |
| OWNUP | Frown upon nucleus? Admit it! | |
| NUCLEOLE | The nucleus within a nucleus; nucleolus. | |
| MESOPLAST | The nucleus of a cell; mesoblast. | |
| NUCLEIFORM | Formed like a nucleus or kernel. | |
| SPERMOCOCCUS | The nucleus of the sperm cell. | |
| NUCLEATED | Having a nucleus; nucleate; as, nucleated cells. | |
| NUCLEOLATED | Having a nucleole, or second inner nucleus. | |
| CYTOCOCCUS | The nucleus of the cytula or parent cell. | |
| UMBRA | The central dark portion, or nucleus, of a sun spot. | |