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war of invention blood transfusions_00001912.jpg
war of invention blood transfusions_00001912.jpg

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    War of Invention: Blood Transfusions

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War of Invention: Blood Transfusions

CNN's Jim Boulden looks at an innovation we take for granted every day and dates back to the battlefields of World War I.

War of Invention: Blood Transfusions

CNN's Jim Boulden looks at an innovation we take for granted every day and dates back to the battlefields of World War I.