Northern blot analysis of p67-phox and gp91-phox mRNA transcripts. Each lane contained 10 μg of total cellular RNA from normal neutrophils (PMN) or EBV-B cells from a normal control or from the indicated patients. The figure shows a blot probed with ³²P-labeled full-length p67-phox cDNA (A) and then stripped and reprobed with gp91-phox cDNA (B).