Results 221 to 230 of about 31,371 (261)
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Genetic Dissection of Active Electrogenesis in Paramecium aurelia
Nature, 1974NEUROPHYSIOLOGISTS frequently use various drugs and toxins to interfere with specific membrane mechanisms. A genetic approach can achieve the same results. In taking this approach to the problem of excitation it is desirable to have an organism, like Paramecium, on which both formal genetic1 and orthodox electrophysiological2 studies can be made.
Ching Kung, Youko Satow
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Paramecium sonneborni n. sp., a New Member of the Paramecium aurelia Species-Complex†
, 1983. From an intermittent stream in College Station, Texas, a Paramecium was isolated that did not appear to belong to any recognized species. On the basis of nuclear and whole-body morphology, it can be assigned to the Paramecium aurelia species-complex ...
K. Aufderheide, P. Daggett, T. Nerad
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INDUCTION OF ENDOMIXIS IN PARAMECIUM AURELIA
The Biological Bulletin, 1937In both stocks R and W of P. aurelia, endomixis can be induced by placing at 31° C. small mass cultures containing the surplus animals from isolation lines. In stock R, induction cultures set up soon after endomixis yielded conjugants, so that the induction of endomixis could not be studied quantitatively in these.
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Growth of Particle‐Bearing and Particle‐Free Paramecium aurelia in Axenic Culture
, 1966SYNOPSIS. Several strains of particle-bearing and particle-free Paramecium aurelia have been cultivated in an axenic medium composed of proteose peptone, trypticase, yeast nucleic acid, MgSO4.7H2O, TEM-4T (diacetyl tartaric acid esters of tallow ...
A. Soldo +2 more
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Folia biologica, 2012
New stands of species of the Paramecium aurelia complex are presented in the paper, P. primaurelia recorded in Italy (Pisa) and in Morocco (Marrakesh), P. biaurelia in Italy (Calabria), P. triaurelia in Morocco (Ifrane), P.
E. Przybós, M. Rautian
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New stands of species of the Paramecium aurelia complex are presented in the paper, P. primaurelia recorded in Italy (Pisa) and in Morocco (Marrakesh), P. biaurelia in Italy (Calabria), P. triaurelia in Morocco (Ifrane), P.
E. Przybós, M. Rautian
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Chapter 15 The Isolation of Nuclei from Paramecium aurelia
1975Publisher Summary This chapter presents a comprehensive description, including failures, of methods for isolating macro- and micronuclei from Paramecium Aurelia. In the method for isolating macronuclei, the aim is to use conditions that (1) caused cell disruption but left the nuclei intact, (2) allowed isolation of at least 50% of the nuclei with ...
Donald J. Cummings, Andrew Tait
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Studies on macronuclear DNA from Paramecium aurelia [PDF]
Chromosoma, 1975 Macronuclear DNA was isolated from purified macronuclei of Paramecium aurelia and the size distribution was determined with regard to growth phase and method of extraction. DNA molecules as long as 105 microns and as short as 0.2 microns were observed. It was concluded that the method of extraction affected the observed length of DNA extracted and that
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The Genetics of Paramecium Aurelia
, 1954LELE, P. P. Relationship between cutaneous thermal thresholds, skin temperature and cross-sectional area of the stimulus. LELE, P. P., WEDDEIX, G. and WILLIAMS, C. M.
G. Beale
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Anatomy of mitochondrial DNA from Paramecium aurelia
Molecular and General Genetics MGG, 1980The linear genome of mitochondrial DNA from four species of Paramecium aurelia was investigated with respect to restriction endonuclease fragments, location and number of ribosomal RNA genes, and interspecies EcoRI and HindIII fragment homologies. One copy of each of the rRNA genes was found in all four species and the 14s and 20s rRNA genes were ...
Jane L. Laping +3 more
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The Antigen System of Paramecium aurelia
1957Publisher Summary The features of the antigen system of Paramecium aurelia are the following– (1) Cells containing a fixed set of genes can exist in a number of different states, as a consequence of which diverse products (antigens) may be formed, without any change in genic constitution. At least twelve such states are known in one stock but there
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