| orphan drug production | Production of drugs or biologicals which are unlikely to be manufactured by private industry unless special incentives are provided by others. (12 Dec 1998) |
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| orphan drug | A pharmaceutical that has been abandoned or neglected during its development because it is seen as having only a limited potential for profit. Often a drug which only has a limited target population or which treats a rare disease, thus limiting its financial potential. (09 Oct 1997) |
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| orphan drug act | Law giving incentives to companies developing a drug for a rare disease. The act gives the developer of the first drug of any one type a 7-year exclusive right to market the new drug. (14 Nov 1997) |
| drug-drug interaction | The effects that occur when two or more drugs are used together. Such effects include changes of absorption in the digestive tract, changes in rate of the drugs' breakdown in the liver, new or enhanced side effects and changes in the drugs' activity. (09 Oct 1997) |
| pair production | <physics> The simultaneous production of an electron and a positron by an interaction of a photon or a fast charged particle with the electronic field of a nucleus or other particle. (16 Dec 1997) |
| primary production | Production of organic substances by photosynthesis, the quantity of material so produced per unit time. (09 Oct 1997) |
| production | The act or process of producing, bringing forth or making. (18 Nov 1997) |
| speech production measurement | Measurement of parameters of the speech product such as vocal tone, loudness, pitch, voice quality, articulation, resonance, phonation, phonetic structure and prosody. (12 Dec 1998) |
| steroid production rate | The total quantity of a given steroid formed in the body, usually expressed as milligrams per day; represents the sum of the glandular secretion of the steroid and extraglandular formation of it from various steroid precursors. (05 Mar 2000) |
| implantation theory of the production of endometriosis | That, at the time of menstruation, cells of the uterine mucosa pass through the fallopian tubes and escape into the pelvic cavity where they implant themselves on the peritoneum. (05 Mar 2000) |
| respiratory enteric orphan virus | A nonenveloped icosahedral virus whose genome consists of double stranded RNA, belonging to the family Reoviridae, frequently found in both the respiratory and enteric tract. Synonym: REO virus. (05 Mar 2000) |
| chicken embryo lethal orphan virus | <virology> A virus with characteristics of adenovirus, and similar to quail bronchitis virus. Synonym: chicken embryo lethal orphan virus. (05 Mar 2000) |
| orphan | See: orphan products. Origin: G. Orphanos (05 Mar 2000) |
| orphan disease | A disease for which no treatment has been developed because of its rarity (affecting no more than 200,000 persons in the U.S.). See: orphan products. (05 Mar 2000) |
| orphan drugs | Drugs, biologicals, and medical devices (including diagnostic in vitro tests) that may be useful in common or rare diseases but which are not considered commercially viable. Synonym: orphan drugs. (05 Mar 2000) |
| orphan products | Drugs, biologicals, and medical devices (including diagnostic in vitro tests) that may be useful in common or rare diseases but which are not considered commercially viable. Synonym: orphan drugs. (05 Mar 2000) |