| ratitate | <zoology> Of or pertaining to the Ratitae. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| ratite | <zoology> Of or pertaining to the Ratitae. One of the Ratitae. Source: Websters Dictionary (01 Mar 1998) |
| Ratner | See: Kurzrok-Ratner test. (05 Mar 2000) |
| rats | The common name for the species rattus norvegicus. (12 Dec 1998) |
| rats, brattleboro | A mutant strain of rattus norvegicus used in research on renal function and hypertension and as a disease model for diabetes insipidus. (12 Dec 1998) |
| rats, gunn | Mutant strain of rattus norvegicus which is used as a disease model of kernicterus. (12 Dec 1998) |
| rats, inbred bb | A strain of rattus norvegicus which is a model for spontaneous insulin-dependent diabetes mellitus (diabetes mellitus, insulin-dependent). (12 Dec 1998) |
| rats, inbred shr | A strain of rattus norvegicus with elevated blood pressure used as a model for studying hypertension and stroke. (12 Dec 1998) |
| rats, inbred strains | Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations or by parent x offspring matings carried out with certain restrictions. This also includes animals with a long history of closed colony breeding. (12 Dec 1998) |
| rats, inbred wky | A strain of rattus norvegicus used as a normotensive control for the spontaneous hypertensive rats (shr). (12 Dec 1998) |
| rats, mutant strains | Rats bearing mutant genes which are phenotypically expressed in the animals. (12 Dec 1998) |
| rats, nude | A mutant strain of rattus norvegicus without a thymus and with depressed or absent T-cell function. This strain of rats may have a small amount of hair at times, but then lose it. (12 Dec 1998) |
| rats, sprague-dawley | A strain of albino rat used widely for experimental purposes because of its calmness and ease of handling. It was developed by the sprague-dawley animal company. (12 Dec 1998) |
| rats, wistar | A strain of albino rat developed at the wistar institute that has spread widely at other institutions. This has markedly diluted the original strain. (12 Dec 1998) |
| rats, zucker | Two populations of zucker rats have been cited in research--the "fatty" or obese and the lean. The "fatty" rat (rattus norvegicus) appeared as a spontaneous mutant. The obese condition appears to be due to a single recessive gene. (12 Dec 1998) |