Figure 4.

Effect of carbon monoxide (CO) pretreatment on the infiltration of inflammatory cells in the cardiac graft tissue 6 hours after reperfusion.

Note: (A) A number of infiltrating naphthol-positive neutrophils and ED-1-positive macrophages were noted in the grafts taken from the air-control animals. There were fewer infiltrating cells in the grafts from the CO-pretreated donors. (B) Number of naphthol AS-D chloroacetate esterase-positive cells. (C) Number of ED-1-positive cells. Values are expressed as the mean ± SD. *P < 0.05, vs. air group. ET-1: Endothelin1.