A modified method for the localization of monoamine oxidase- (MAO) enzyme activity m cells and fibres of some visceral tissues was described. As a model control and 21-day old embryonic pancreatic tissues fragments transplanted into the anterior eye-chamber of adults rats were used. After 135 days the vibroslice-sectioned slices were incubated in a solution containing tryptamine, nitroblue tetrazolium, sucrose and sodium sulphate. MOA-positive neurons and their processes were observed in the periductal and in intrainsular areas of transplanted and control tissues. MAO-positive mast cells were also detected in the lung. The method may be applied to other tissues as well.
|Number of pages||5|
|Publication status||Published - Dec 1 1993|
- Enzyme activity
- Monoamine oxidase
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