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Through the Microscope: Blood Cells - Life's Blood

Rouleaux

Rouleaux formation occurs when red blood cells form stacks or rolls. This is due to either an artifact (such as a result of not preparing the blood smear soon enough after placing the blood on the slide), or it may be due to the presence of high concentrations of abnormal globulins or fibrinogen. This formation of the red blood cells is found in multiple myeloma and macroglobulinemia

Rouleaux