iNOS staining in chest wall in cerebral malaria and in controls. A: Category A cerebral malaria chest wall and skeletal muscle both showing negligible vascular wall iNOS. B: Category B cerebral malaria chest wall showing high vascular wall iNOS, and, in C, skeletal muscle. D: Category C cerebral malaria chest wall showing high vascular wall iNOS and, in E, skeletal muscle. F and G: Negligible iNOS in chest wall blood vessel walls and skeletal muscle in two Malawi childhood controls, and in H, same in Caucasian control. Scale bar, 100 μm.