Figure 9

Increased infiltration of neutrophils in the bones and lungs of arthritic PyV MT mice. A-F: Naphthol AS-D chloroacetate esterase staining of the bones and lungs for neutrophils. Increased infiltration of neutrophils in bones (A-C) and lungs (D-F) of arthritic PyV MT mice indicated by arrows. Representative of 10 fields in n = 10 mice is shown. The images of the bones and lungs were taken at 400× and 200× magnification respectively.