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Credit
The Wellcome physiological research laboratories : founded 1894, Walter Dowson ... director. Attribution-NonCommercial 4.0 International (CC BY-NC 4.0). Source: Wellcome Collection.
Provider
This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.