Diagram of the circulation. The vessels which contain artificial blood are represented in red, those containing venous blood in blue. Lymph vessels are black.

Digital Commonwealth — Boston Public Library

Diagram of the circulation. The vessels which contain artificial blood are represented in red, those containing venous blood in blue. Lymph vessels are black.

[ca. November 1939]

RightsCC0 — Public Domain

CollectionDigital Commonwealth — Boston Public Library

[Information from item housing] Heart + Heart Surgery

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