Neutrophil cytosolic NADPH oxidase components. Neutrophil cytosolic oxidase components were examined as described in Materials and Methods. (A) Results with antibodies to p47-phox and p67-phox. (B) Results with an antibody to p40-phox. Despite an apparent decrease in p40-phox in #7 D0, there was no statistically significant effect on the quantity of the oxidase proteins studied, as measured by densitometry (data not shown). These results demonstrate a representative study of two treated volunteers and a control. C, control; #7 and #8 denote treated volunteers, on day 0 and day 4.