Human fibroblasts contained roughly the same level of microsomal p-nitrophenyl sulfatase activity as that previously observed in hepatic microsomes .
human fibroblasts contained roughly the same level of microsomal p-nitrophenyl sulfatase activity as that previously observed in hepatic microsomes .
B-cell_type I-cell_type O O O O O O B-other_name B-protein_molecule I-protein_molecule O O O O O O B-cell_type I-cell_type O