In contrast , no upregulation of the lipoxygenase activity was observed when the macrophages were prepared from homozygous STAT6 -deficient mice .
in contrast , no upregulation of the lipoxygenase activity was observed when the macrophages were prepared from homozygous stat6 -deficient mice .
O O O O O O O B-protein_molecule O O O O O B-cell_type O O O O B-protein_molecule O O O