| IFCR | International Foundation for Cancer Research |
|---|---|
| IFRP | International Fertility Research Program |
| IRIS | integrated risk information system; interleukin regulation of immune system; International Research ... |
| OIR | Office of Information Resources; Office of International Research |
| SI | System of International Units (Systeme International D'unites) |
| Kerckring's centre | An occasional independent ossification centre in the occipital bone; it appears in the posterior margin of the foramen magnum at about the sixteenth week of gestation. Synonym: Kerckring's ossicle. (05 Mar 2000) |
|---|---|
| feeding centre | A region of the lateral zone of the hypothalamus, electrical stimulation of which in the rat elicits uninterrupted eating; destruction of the region causes long-lasting anorexia. (05 Mar 2000) |
| fibrillar centre | <cell biology> Location of the nucleolar ribosomal chromatin at telophase: as the nucleolus becomes active the ribosomal chromatin and associated ribonucleoprotein transcripts compose the more peripherally located dense fibrillar component. (12 Nov 1997) |