Schwarzmeier J D, Rett A
Padiatr Padol Suppl. 1975;4:98-103.
Although the present studies were carried out in a large number of patients, it is not possible to say wether (and what kind of) enzymes are genetically fixed on chromosome 21. It is to be hoped that further studies on the question of enzyme localization, particularly of phosphofructokinase, will afford some clarification.