Further Observations on the Fine Structure of the Macronucleus in Tokophrya Infusionum
نویسنده
چکیده
In a previous paper (8) an organized structure was described in the macronuclei of certain old organisms of Tokophrya infusionum. It was found that the same honeycomb structure appears in great abundance in the macronuclei of overfed organisms. This permitted a better three-dimensional reconstruction of the described structure. Since the defined structure may be experimentally induced, it offers an opportunity for further more detailed studies as to its nature and meaning.
منابع مشابه
Further Observations on the Fine Structure of the Macronucleus in Tokophrya Infusionum by Maria A. Rudzinska,* Ph.d
Among Protozoa, the group Ciliophora (except Opalinidae) is peculiar i n having a nuclear apparatus composed of a macronucleus and a micronucleus. I t has been assumed that this nuclear dimorphism provides for a functional separation, the micronucleus serving for genetic and the macronucleus for metabolic functions only. Results of several observations and experiments during the last years indi...
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The macronucleus in Tokophrya infusionum is composed of numerous Feulgen-positive chromatin bodies (about 0.5 micro in diameter) which appear in thin sections as a dense spongework, homogeneous throughout. The same appearance characterizes metaphase chromosomes of higher forms. Some chromatin bodies of the macronucleus were found to possess a highly organized structure in certain old organisms....
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عنوان ژورنال:
- The Journal of Biophysical and Biochemical Cytology
دوره 2 شماره
صفحات -
تاریخ انتشار 1956