Abstract
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.
Full Text
The Full Text of this article is available as a PDF (378.3 KB).
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Chen T. T. Conjugation in Paramecium Bursaria between Animals with Very Different Chromosome Numbers and between Animals with and without Micronuclei. Proc Natl Acad Sci U S A. 1940 Apr 15;26(4):243–246. doi: 10.1073/pnas.26.4.243. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kimball R. F. The Structure of the Macronucleus of Paramecium Aurelia. Proc Natl Acad Sci U S A. 1953 Apr;39(4):345–347. doi: 10.1073/pnas.39.4.345. [DOI] [PMC free article] [PubMed] [Google Scholar]
- PORTER K. R., BLUM J. A study in microtomy for electron microscopy. Anat Rec. 1953 Dec;117(4):685–710. doi: 10.1002/ar.1091170403. [DOI] [PubMed] [Google Scholar]
- RUDZINSKA M. A. Giant individuals and vigor of populations in Tokophyra infusionum. Ann N Y Acad Sci. 1953 Oct 14;56(5):1087–1090. doi: 10.1111/j.1749-6632.1953.tb30292.x. [DOI] [PubMed] [Google Scholar]
- RUDZINSKA M. A. Overfeeding and life span in Tokophrya infusionum. J Gerontol. 1952 Oct;7(4):544–548. doi: 10.1093/geronj/7.4.544. [DOI] [PubMed] [Google Scholar]
- RUDZINSKA M. A., PORTER K. R. Observations on the fine structure of the macronucleus of Tokophrya infusionum. J Biophys Biochem Cytol. 1955 Sep 25;1(5):421–428. doi: 10.1083/jcb.1.5.421. [DOI] [PMC free article] [PubMed] [Google Scholar]
- RUDZINSKA M. A. The use of OsO4 as fixative for Feulgen-stained preparations. J Biophys Biochem Cytol. 1955 Sep 25;1(5):472–475. doi: 10.1083/jcb.1.5.472. [DOI] [PMC free article] [PubMed] [Google Scholar]