Answer 4

  1. The image is of white blood cells. The presence of white blood cells indicates infection. White blood cells migrate to sites of injury in response to inflammatory processes. In this situation, the 60-year-old man has undergone a blood transfusion. It is taking his body some time to adjust to the blood transfusion.

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References: Brunzel, Nancy A. Fundamentals of Urine & Body Fluid Analysis. 2nd ed. Philadelphia, Pa: Saunders; 2004: 189-190.

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