1.1.1.205 IMP dehydrogenase Morris hepatoma 3924A cell - 347915, 347940 3.6.1.1 inorganic diphosphatase Morris hepatoma 3924A cell - 209779 6.3.5.5 carbamoyl-phosphate synthase (glutamine-hydrolysing) Morris hepatoma 3924A cell about 10fold higher activity than in normal liver 1745