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 - Ireland

Description	Price	Currency
35-49g weight	28.95	GBP
50-74g weight	32.00	GBP
75-99g weight	35.40	GBP
100-124g weight	38.70	GBP
125-149g weight	42.60	GBP
150-174g weight	46.95	GBP
175-199g weight	50.95	GBP
200-224g weight	55.85	GBP
225-249g weight	61.15	GBP
250-274g weight	67.40	GBP
275-299g weight	74.00	GBP
Over 12 weeks, add per week	6.55	GBP
Proven breeder	88.20	GBP
Retired breeder	37.65	GBP

Female Order code: 861 - Ireland

Description	Price	Currency
35-49g weight	28.55	GBP
50-74g weight	32.95	GBP
75-99g weight	38.10	GBP
100-124g weight	43.25	GBP
125-149g weight	49.75	GBP
150-174g weight	55.80	GBP
175-199g weight	64.80	GBP
Over 12 weeks, add per week	6.55	GBP
Untimed pregnant female	224.05	GBP
Timed pregnant female	282.65	GBP
Female with litter	309.65	GBP
Proven breeder	85.55	GBP
Retired breeder	39.65	GBP