Our data show that: (1) Timm's silver stain is the most sensitive method for the demonstration of copper in all cases of WD; (2) rhodanine and orcein have minor value in the diagnosis of WD, especially in the early stages of the disease; (3) to increase the diagnostic value of histochemistry for copper multiple histochemical stains in serial sections are required; and (4) although hepatic copper concentration is highest in the early stages of WD, the histochemical demonstration fails in a large number of cases.
A first-time description is given of a unique combination of congenital deformities encountered in a female infant born in the 35th week of gestation and surviving for minutes only. The principal malformations comprised duplicity of the hypophysis cerebri and mammillary bodies, olfactory aplasia, agenesis of corpus callosum, Dandy-Walker syndrome, thoracolumbo-sacral rachischisis and hydromyelia, associated with palato-gnatho-cheilo-schisis, defects in the pericardium and cardiac interventricular septum and gross maldevelopment of the diaphragm. Of these cerebral anomalies, we have chosen to concentrate on the condition which we denominate "diplo-mammillo-hypophysis" (mammillo-hypophyseal duplication) as the object of this study. On grounds of embryonal development it is considered to have come about during the first half of the 2nd month of gestation. The likely genesis of the pathologic findings is discussed.
Für die Tonbandaufnahmen schliessen wir die gleichen Hydrophone einem Nagra IV L Kudelski Tape-recorder an. Der dazugehörige Vorverstärker hat einen Frequenzbereich von 10 Hz -30 kHz. Diese Einrichtung wurde auch bei den Feldbeobachtungen am Indus benutzt. Die Tonbandaufnahmen können gleichzeitig mit den Direktaufnahmen der Impulse über das zweite Hydrophon im Zweikanal-Oscilloskop betrachtet werden. An das Nagra IV L -Gerät sind Kopfhörer und Lautsprecher angeschlossen. Das Verhalten der Tiere wird über eine Fernsehkamera mit TV-Monitor kontrolliert.
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