Health / Medical Topics |
SD, Rat Strain
Derived from Wistar rats at Sprague-Dawley farms, this rat strain is characterized by a calm temperament which lends itself to ease of handling. This rat strain has the following anatomical features: absent gallbladder, a one-lobed left lung and a four-lobed right lunch, the inability to vomit, and the production of dark colored eye secretions during periods of stress. The SD rat has good breeding performance and a lifespan of 2.5-3.5 years. (NCI Thesaurus)
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