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Credit
On the extrusion of the morphological elements of the blood : the physical principles concerned, and the relation which such extruded elements bear to pus and to the so-called fibrinous exudation of inflammation / by Richard Norris. Public Domain Mark. Source: Wellcome Collection.
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This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.