Peroxidase-positive lysosomes (arrow) in a peripheral blood monocyte. Original magnification × 16,000. (Courtesy of Ann M. Dvorak, MD, Department of Pathology, Beth Israel Hospital, Harvard Medical School, Boston, MA 02215.)
Peroxidase-positive lysosomes (arrow) in a peripheral blood monocyte. Original magnification × 16,000. (Courtesy of Ann M. Dvorak, MD, Department of Pathology, Beth Israel Hospital, Harvard Medical School, Boston, MA 02215.)
