| Rb | <molecular biology> Tumour suppressor gene encoding a nuclear protein that, if inactivated, enormously raises the chances of development of cancer, classically retinoblastoma, but also other sarcomas and carcinomas. (18 Nov 1997) |
|---|---|
| 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) |
| RBE | Abbreviation used in radiation protection for relative biologic effectiveness; same as quality factor, QF. (05 Mar 2000) |
| RBF | <abbreviation> Renal blood flow. See: effective renal blood flow. (05 Mar 2000) |