Where (at which lab/animal house) can i purchase C57BL/6 mouse strain; as i need it for my own research?

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Pietro Pilo Boyl

I believe best would be to order them at Harlan (now Envigo), they breed them in Israel:

https://www.envigo.com/global-locations.aspx

Heba Mehran

Pietro Pilo Boyl, thank you so much for your answer, i found that this strain is available at the Biological Production Unit (BPU) of Theodore Bilharz

Research Institute (Giza, Egypt).