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Laboratory scientist inoculating a guinea pig
A laboratory scientist injects a laboratory guinea pig for research in scurvy prevention.
15.5 x 14 cm
black and white
- still image
- These materials are either in the public domain, according to U.S. copyright law, or permission has been obtained from rights owners. The digital version and supplementary materials are available for all educational uses worldwide.
- The Janet A. Ginsburg Chicago Tribune Image Collection
- Chicago Sunday Tribune (November 25, 1934), p. 7