Rats, Nude

**Definition:** 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.

**Tree numbers:** - B01.050.150.900.649.313.992.635.505.700.550.508

**Synonyms:** - Athymic Rats - Rats, Athymic - Nude Rats