1930s 1940s MOTHER WHITE LAB RAT Rattus norvegicus domestica EXCEPTIONALLY LARGE LITTER WISTAR INSTITUTE, PHILADELPHIA PA USA - l241 HAR001 HARS GROWTH MAMMAL RATS RODENT USE BLACK AND WHITE HAR001 OLD FASHIONED SUBSPECIES

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Size: 5817px × 4155px
Location: PHILADELPHIA PA USA
Photo credit: © H. ARMSTRONG ROBERTS / Alamy / Afripics
License: Licensed
Model Released: No

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