| Gell and Coombs Classification | A classification system that differentiates the 4 types of hypersensitivity reactions: Type I: anaphylactic reactions, Type II: cytotoxic reactions, Type III: immune complex reactions, and Type IV: cell-mediated reactions. (05 Mar 2000) |
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| rate setting and review | A method of examining and setting levels of payments. (12 Dec 1998) |
| ratio of decayed and filled surfaces | An index of decayed and filled permanent surfaces per person, per full complement of 122 tooth surfaces. (05 Mar 2000) |
| ratio of decayed and filled teeth | An index of decayed and filled permanent teeth per person, per full complement of 28 teeth. (05 Mar 2000) |
| receptors, cytoplasmic and nuclear | Proteins in the cytoplasm or nucleus that specifically bind signalling molecules and trigger changes which influence the behaviour of cells. The major groups are the steroid hormone receptors, which usually are found in the cytoplasm, and the thyroid hormone receptors, which usually are found in the nucleus. Receptors, unlike enzymes, generally do not catalyze chemical changes in their ligands. (12 Dec 1998) |
| maternal age 35 and over | Pregnancy in women 35 or more years of age. It is used for normal pregnancies and for problems of pregnancy occurring in a woman's late reproductive years. These include effects on the mother's physical and mental health as well as risks of perinatal mortality and foetal abnormality. (12 Dec 1998) |
| VH and VL genes/domains | VH and VL genes define in part the sequences of the variable heavy and light regions of immunoglobulin molecules. VH and VL domains are the regions of amino acid sequence so defined. J genes and, in the case of the heavy chain, a D gene (D=diversity) also define these regions. Gene rearrangement also plays a role in determining the sequences in which the genes are joined as the DNA of the immunoglobulin producing cell matures. (18 Nov 1997) |
| referral and consultation | The practice of sending a patient to another program or practitioner for services or advice which the referring source is not prepared to provide. (12 Dec 1998) |
| measles, mumps and rubella vaccine | A combination of live attenuated measles, mumps, and rubella viruses in an aqueous suspension; used for immunization against the respective diseases. (05 Mar 2000) |
| rehabilitation of speech and language disorders | Procedures for assisting a person with a speech or language disorder to communicate with maximum efficiency. (12 Dec 1998) |
| patient credit and collection | Accounting procedures for determining credit status and methods of obtaining payment. (12 Dec 1998) |
| religion and medicine | The interrelationship of medicine and religion. (12 Dec 1998) |
| religion and psychology | The interrelationship of psychology and religion. (12 Dec 1998) |
| Centers for Disease Control and Prevention | <organisation> The U.S. Public health agency serving as the centre for preventing, tracking controlling and investigating the epidemiology of AIDS and other diseases. (26 Mar 1998) |
| reproductive and urinary physiology | Physiology of the human and animal body, male or female, in the reproductive process and the physiology of the urinary tract. (12 Dec 1998) |