CD® (Sprague Dawley) IGS rat, Crl:CD(SD)

Nomenclature: Crl:CD(SD)

Type: Outbred rat

Origin: Originated in 1925 by Robert W. Dawley from a hybrid hooded male and a female Wistar rat. To Charles River in 1950 from Sprague Dawley, Inc. In 1991, 8 colonies were selected to form the IGS Foundation Colony. Rederived into an isolator foundation colony in 1997. IGS refers to animals bred using the Charles River International Genetic Standardization Program.

Coat color: White (albino)

Strain code: 001

Ideal for: General multipurpose model, safety and efficacy testing, aging, nutrition, diet-induced obesity, oncology, surgical model

Bred in: Germany, UK, Italy 

Health reports: Using strain nomenclature find the strain at links below

• animals health reports bred in Charles River Germany
• animals health reports bred in Charles River UK
• animals health reports bred in Charles River Italy 

Note: We also offer the CD^®(SD)IGS SOPF Rat with a SOPF health profile (bred in Italy and France).

*Photos provided courtesy of Charles River