| RAS | 1) Reticular Activating(Activation) System 2) Renal Artery Stenosis |
|---|---|
| RES | Reticulo-Endothelial System |
| SI | System of International Units (Systeme International D'unites) |
| AAMRS | automated ambulatory medical record system |
| ABO | abortion; absent bed occupancy; American Board of Orthodontists; blood group system consisting of gr... |
| diagnostic techniques, digestive system | Methods and procedures for the diagnosis of diseases or dysfunction of the digestive system or its organs or demonstration of their physiological processes. (12 Dec 1998) |
|---|---|
| diagnostic techniques, respiratory system | Methods and procedures for the diagnosis of diseases of the respiratory tract or its organs. It includes respiratory function tests. (12 Dec 1998) |
| digestive system | The organs that are responsible for getting food into and out of the body and for making use of food to keep the body healthy. These include the mouth, oesophagus, stomach, liver, gallbladder, pancreas, small intestine, colon, and rectum. (12 Dec 1998) |
| digestive system abnormalities | Congenital structural abnormalities of the digestive system. (12 Dec 1998) |
| digestive system fistula | An abnormal passage communicating between any parts of the digestive system or between any part of the digestive system and other organs. (12 Dec 1998) |
| digestive system surgical procedures | Surgery performed on the digestive system or its parts. (12 Dec 1998) |
| dopaminergic system | The system of nerve cells that uses dopamine asits neurotransmitter. (22 May 1997) |
| duffy blood-group system | A blood group consisting mainly of the antigens fy(a) and fy(b), determined by allelic genes, the frequency of which varies profoundly in different races; amorphic genes are common. (12 Dec 1998) |
| I blood-group system | A blood group related both to the abo and p systems that includes several different antigens found in most people on erythrocytes, in milk, and in saliva. The antibodies react only at low temperatures. (12 Dec 1998) |
| imhoff treatment system | In waste water treatment, a tank without aeration or oxygenation where solids settle out. The solids are digested in a separate compartment in the bottom. (05 Dec 1998) |
| immune system | <immunology> The body system, made up of many organs and cells, that defends the body against infection, disease and foreign substances. The immune system is often stimulated in specific ways to fight cancer cells. (16 Dec 1997) |
| indicator system | In in vitro immunological tests, a combination of reagents used to determine the degree to which immunological reagents have combined (e.g., sensitised erythrocytes in complement-fixation tests; enzyme and substrate in enzyme-linked immunosorbent assays). (05 Mar 2000) |
| information system | Combination of vital and health statistical data from multiple sources, used to derive information and make decisions about the health needs, health resources, costs, use, and outcome of health care. (05 Mar 2000) |
| integumentary system | The skin, hair, and nails; derived from ectoderm and subjacent mesoderm. (05 Mar 2000) |
| intermediary system | One of the lamellae of partially resorbed osteons occurring between newer, complete osteons. Synonym: ground lamella, intermediary system, intermediate lamella. (05 Mar 2000) |