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. 1965 Sep 1;26(3):835-43.
doi: 10.1083/jcb.26.3.835.

THE OCCURRENCE AND STRUCTURE OF MICROBODIES : A Comparative Study

B A Afzelius  1
Affiliations

THE OCCURRENCE AND STRUCTURE OF MICROBODIES : A Comparative Study

B A Afzelius. J Cell Biol. .

Abstract

Livers from chickens, rats, mongrel dogs, Dalmatian dogs, and man have been examined in the electron microscope in order to compare the microbodies with the known content of uricase. It is concluded that microbodies with inclusion are present in rats, mongrel dogs, and, although the inclusion generally is smaller, in Dalmatian dogs. The inclusion has a characteristic structural appearance. These species (rat, dog) have uricase. Chickens and man lack both the enzyme uricase and the microbody inclusion. This evidence and that from previously published electron micrographs in the literature on microbodies support the notion of a positive correlation between uricase and microbodies with an inclusion. It is recommended that the term "uricosome" be used for such microbodies that have an inclusion of the appearance here described.

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