The placenta, the organic nervous system, the blood, the oxygen, and the animal nervous system, physiologically examined / by John O'Reilly.

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Credit: The placenta, the organic nervous system, the blood, the oxygen, and the animal nervous system, physiologically examined / by John O'Reilly. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)