Isoforms of NADPH oxidase NOX1 , NOX2 , and NOX4 are reported to be expressed in endothelial cells ( ECs ) .
O O B-GeneOrGeneProduct I-GeneOrGeneProduct B-GeneOrGeneProduct O B-GeneOrGeneProduct O O B-GeneOrGeneProduct O O O O O O O O O O O O