Summary
A study of the amygdala of the guinea pig was carried out on material stained by the Nissl, acetylcholinesterase (AChE) and monoamine oxidase (MAO) methods. The material stained for Nissl substance was used primarily as a reference in determining the distribution of the two enzymes. Regional differences in cell size and/or distribution were noted within the lateral, basal, medial and cortical nuclei. In the AChE preparations, it was observed that the large-celled part of the basal nucleus stained very intensely, the small-celled part of the basal nucleus and ventromedial part of the lateral nucleus more moderately, and the dorsolateral part of the lateral nucleus and cortical nucleus lightly. The central and medial nuclei showed almost no reaction. With the MAO method, the greatest staining reaction was seen in the medial nucleus, the medial part of the cortical nucleus, the anterior amygdaloid area and the ventromedial wedge of the putamen adjacent to the central nucleus. In addition, fibres of the stria terminalis stained very darkly.
These findings are discussed in relation to the observations of previous authors employing the same methods.
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Supported in part by the Canadian Medical Research Council Grant No. M.T. 870 and U.S. Public Health Service Grant No. NS-07998. This aid is gratefully acknowledged. We are indebted to Dr. Gorm Danscher for additional material and to Mr. A. Meier, Mrs. L. Munkøe, Mrs. K. Sørensen, Miss M. Sørensen, Miss D. Valgaard, and Miss B. Ørum for skillful assistance.
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Hall, E., Geneser-Jensen, F.A. Distribution of acetylcholinesterase and monoamine oxidase in the amygdala of the guinea pig. Z. Zellforsch. 120, 204–221 (1971). https://doi.org/10.1007/BF00335536
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DOI: https://doi.org/10.1007/BF00335536