| experimental | 1. Of, relating to or based on experience: empirical. 2. Of a disease: intentionally produced especially in laboratory animals for the purpose of study. (18 Nov 1997) |
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| experimental allergic encephalitis | <pathology> An autoimmune disease that can be induced in various experimental animals by the injection of homogenised brain or spinal cord in Freund's adjuvant. The antigen appears to be a basic protein present in myelin and the response is characterised by focal areas of lymphocyte and macrophage infiltration into the brain, associated with demyelination and destruction of the blood-brain barrier. Sometimes used as a model for demyelinating diseases, although whether this is entirely justifiable is not clear. (18 Nov 1997) |
| experimental allergic encephalomyelitis | <pathology> An autoimmune disease that can be induced in various experimental animals by the injection of homogenised brain or spinal cord in Freund's adjuvant. The antigen appears to be a basic protein present in myelin and the response is characterised by focal areas of lymphocyte and macrophage infiltration into the brain, associated with demyelination and destruction of the blood-brain barrier. Sometimes used as a model for demyelinating diseases, although whether this is entirely justifiable is not clear. (18 Nov 1997) |
| experimental error | The total error of measurement ascribed to the conduct of an empirical observation. It is commonly expressed as the standard deviation of replicated experiments. There may be many components, including those in the sampling procedure, the measurements, injudicious choice of a model, observer bias, etc. (05 Mar 2000) |
| experimental group | A group of subjects exposed to the variable of an experiment, as opposed to the control group. (05 Mar 2000) |
| experimental medicine | The scientific investigation of medical problems by experimentation upon animals or by clinical research. (05 Mar 2000) |
| experimental method | In experimental psychology, control of environmental, physiological, or attitudinal factors to observe dependent changes in aspects of experience and behaviour. (05 Mar 2000) |
| experimental neurosis | A behaviour disorder produced experimentally, as when an organism is required to make a discrimination of extreme difficulty and "breaks down" in the process. (05 Mar 2000) |
| experimental psychology | A subdiscipline within the science of psychology that is concerned with the study of conditioning, learning, perception, motivation, emotion, language, and thinking, also used in relation to subject-matter areas in which experimental, in contrast to correlational or socio-experiential, methods are emphasized. (05 Mar 2000) |
| leukaemia, experimental | Leukaemia induced experimentally by administration of various leukemogenic agents, viruses, radiation or transplantation. (12 Dec 1998) |
| liver neoplasms, experimental | Experimentally induced tumours of the liver. (12 Dec 1998) |
| Venereal Disease Research Laboratory | <microbiology> A blood test used to diagnose syphilis. Read as nonreactive or negative if you do not have syphilis. The Venereal Disease Research Laboratory can also be positive is cases of leprosy, malaria, mononucleosis, lupus, hepatitis A and pregnancy. Positive Venereal Disease Research Laboratory tests are usually followed up by a more specific test (FTA antibodies). (12 Jan 1998) |
| Medical Research Council | <organisation> A UK Government funded body to promote the balanced development of medical and related biological research in the United Kingdom. It organises national clinical trials for the assessment of new treatment protocols for leukaemia and some of the related diseases. (05 Jan 1998) |
| research | Careful, a diligent search, a close searching, studious inquiry or examination. (18 Nov 1997) |
| research, controlled | The first controlled clinical research was probably done in 1875 by the british naval surgeon james lind who, on board the hms salisbury, gave sailors with scurvy either oranges or lemons or cider or vinegar or nutmeg (or another treatment) and after just six days discovered that the citrus-consuming sailors had recovered from scury, until then the scourge of extended sea voyages, while the sailors who had been given the other treatments remained uncured. (12 Dec 1998) |