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Quarterly Journal of Microscopical Science, Vol s3-104, 51-56, Copyright © 1963 by Company of Biologists

A Study of the Adrenal Tissue of the Male African Bullfrog, Rana Adspersa

DOUGLAS E. MOORHOUSE 1

1 Department of Zoology, University College of Rhodesia and Nyasaland, Salisbury, Southern Rhodesia. Present address: World Health Organization, P.O. Box 13, Kuala Lumpur, Malaya

The structure of the adrenal tissue was investigated by both histological and histochemical techniques.

It is shown that the adrenal contains 4 types of tissues; these are named the steroid, Stilling, lymphoid, and chromaffin tissues.

The structure of the adrenal in the bullfrog does not provide any evidence to support a theory of zonation within the cortical tissue of the Anura, as suggested by some authors.

There is no alteration in the appearance or numbers of the ‘summer cells’ of Stilling that can be correlated with the time of year or with the sexual activity of the animal. For this reason it is considered preferable to call these ‘Stilling cells’, as was suggested by Magath (1915). There is evidence that structural differences are to be found between the Stilling cells and the granulocytes found in the lymphoid tissue.






© The Company of Biologists Ltd 1963