1.1.1.141 15-hydroxyprostaglandin dehydrogenase (NAD+) macula densa intense immunofluorescent staining for 15-hydroxyprostaglandin dehydrogenase in macula densa and glomerulus of cyclooxygenase-2 knock-out mice 684372 1.6.3.1 NAD(P)H oxidase (H2O2-forming) macula densa NOX2 and NOX4 are the main isoforms present in macula densa cells 712136