Lewis inbred rats: LEW/Han®Hsd

select features

Coat: Albino
Docile disposition
Haplotype: RT1^l
Inbred recipient for several congenic strains
Increased levels of serum thyroxine, insulin, and growth hormone
Litter average: 7.5
Susceptible to induction of autoimmune disease

Origin: Inbreeding of the Lewis rat is begun by Dr. Margaret Lewis from a Wistar stock. In 1924, at F20 to Aptekman and Bogdon. In 1958, at F31 to Silvers, who distributed this strain subsequently.

To Central Institute for Laboratory Animal Breeding, Hannover, in 1973 at F58. In 1994, to Harlan Netherlands through acquisition of Central Institute for Laboratory Animal Breeding. Harlan became Envigo on 2015.

Available regions:

Asia-Pacific Austria Baltic states Belgium East Europe France Germany Ireland Italy Portugal Scandinavia Spain Switzerland The Netherlands United States United Kingdom Other regions

Male Order code: 861 - United Kingdom

Description	Price	Currency
35-49g weight	33.55	GBP
50-74g weight	37.15	GBP
75-99g weight	41.05	GBP
100-124g weight	44.90	GBP
125-149g weight	49.45	GBP
150-174g weight	54.45	GBP
175-199g weight	59.10	GBP
200-224g weight	64.80	GBP
225-249g weight	70.95	GBP
250-274g weight	78.20	GBP
275-299g weight	85.85	GBP
Over 12 weeks, add per week	7.60	GBP
Proven breeder	102.30	GBP
Retired breeder	43.65	GBP

Female Order code: 861 - United Kingdom

Description	Price	Currency
35-49g weight	33.15	GBP
50-74g weight	38.25	GBP
75-99g weight	44.20	GBP
100-124g weight	50.15	GBP
125-149g weight	57.75	GBP
150-174g weight	64.75	GBP
175-199g weight	75.20	GBP
Over 12 weeks, add per week	7.60	GBP
Untimed pregnant female	259.85	GBP
Timed pregnant female	327.85	GBP
Female with litter	359.15	GBP
Proven breeder	99.25	GBP
Retired breeder	46.00	GBP