| RBC | <haematology> Cell specialised for oxygen transport, having a high concentration of haemoglobin in the cytoplasm (and little else). Biconcave, anucleate discs, 7nm diameter in mammals, nucleus contracted and chromatin condensed in other vertebrates. Acronym: RBC (18 Nov 1997) |
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| non-nucleated | <cell biology> Having no nucleus. (05 Mar 2000) |
| nucleated | Provided with a nucleus, a characteristic of all true cells. (05 Mar 2000) |