1.14.99.20 17 - enzyme assay 438306 1.14.99.20 25 - enzyme assay 438308, 438309, 438310 1.14.99.20 27 - - 438303, 438305 1.14.99.20 27 - enzyme assay 438301, 438304 1.14.99.20 37 - enzyme assay 438300