Chronic lymphocytic leukemia (CLL) is a type of cancer that affects lymphocytes ... also known as peripheral blood smear, a doctor measures the levels of the different cells in the blood sample ...

(a) The smear shows a cluster of cells and single spindle-shaped epithelial cells with occasional small lymphocytes, Diff-Quik stain, 400×. (b) The smear shows a cluster of monotonous spindle ...