Adult polyglucosan body disease body disease do not have identified mutations in the "GBE1" gene. In these individuals, the cause of the disease is unknown. Along with evaluation of the symptoms and a neurological examination, a diagnosis can be made based on genetic testing. Whether or not a person is making sufficient amounts of functional glycogen branching enzyme can be determined by taking a skin biopsy and testing for activity of the enzyme. Examination of tissue biopsied from the sural nerve under a microscope can reveal the presence of polyglucosan bodies. There will also be white matter changes visible in a magnetic resonance imaging
Nikolaus Ritter spymaster he knew from the first World War who was living in New York, Fritz Joubert Duquesne. Back in 1931, Ritter had met Duquesne in New York, and the two spies reconnected in New York on 3 December 1937. Ritter also met with Herman W. Lang, a spy who operated under the code name: PAUL. Herman Lang worked as a machinist, draftsman, and assembly inspector for the Carl L. Norden Company where he had been contracted to manufacture an advanced, topsecret military bomber part, the Norden bombsight. He provided Ritter a large drawing of the Norden bombsight which Ritter stored