Developed in 1921 by Little from brother - sister pair (57 x 52) of Miss Abby Lathrop’s stock. Strains C57BL/6 and C57BL/10 separated prior to 1937. In 1947 from Strong, Cold Spring Harbor, NY, to Kaplan, Stanford, CA, USA, to Law, National Cancer Institute, Bethesda, MD, USA
C57BL/KaLwRijHsd
In 1965 from Law, National Cancer Institute, Bethesda, MD, USA, to Radiobiological Institute TNO, Rijswijk, The Netherlands. In 1994, to Harlan Laboratories through acquisition of ITRI-TNO, Rijswijk. Harlan was renamed Envigo in 2015, then Envigo was acquired by Inotiv in 2021.
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