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 - Spain

Description	Price	Currency
35-49g weight	38.90	EUR
50-74g weight	46.00	EUR
75-99g weight	52.20	EUR
100-124g weight	58.05	EUR
125-149g weight	65.50	EUR
150-174g weight	73.30	EUR
175-199g weight	80.25	EUR
200-224g weight	87.45	EUR
225-249g weight	94.65	EUR
250-274g weight	103.25	EUR
275-299g weight	110.70	EUR
Over 12 weeks, add per week	8.65	EUR
Proven breeder	110.05	EUR
Retired breeder	51.25	EUR

Female Order code: 861 - Spain

Description	Price	Currency
35-49g weight	39.95	EUR
50-74g weight	48.95	EUR
75-99g weight	58.15	EUR
100-124g weight	66.85	EUR
125-149g weight	78.45	EUR
150-174g weight	88.40	EUR
175-199g weight	102.15	EUR
Over 12 weeks, add per week	8.15	EUR
Untimed pregnant female	383.60	EUR
Timed pregnant female	538.25	EUR
Female with litter	484.10	EUR
Proven breeder	113.10	EUR
Retired breeder	52.90	EUR