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Biology of Reproduction, Vol 33, 1189-1195, Copyright © 1985 by Society for the Study of Reproduction
ARTICLES |
ZU Qian, YH Tsai, A Steinberger, M Lu, AR Greenfield and MK Haddox
We have employed a monospecific, polyclonal antibody to ornithine decarboxylase (ODC) for the immunocytochemical localization of ODC in freshly isolated testicular cells, epididymal spermatozoa, and cultured Sertoli cells. Antigenically detectable material was present in the cytoplasm of all cell types tested and was highly concentrated in the acrosomal vesicle of round spermatids and in the acrosome region of epididymal spermatozoa. The specific enzymatic activity of ODC, as measured biochemically, was much higher in the interstitial cells than in the other testicular cell types, and no ODC activity was detected in the epididymal spermatozoa or in the Sertoli cells after 5 days in culture. These studies showed that, while all testicular cell types studied contained ODC-like immunoreactive molecules, only testicular germ cells and interstitial cells exhibited detectable ODC activity.
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