Results 251 to 260 of about 32,903 (300)
Some of the next articles are maybe not open access.

Inter- and intrasyngenic variation of paramecium hemoglobin—II. Paramecium caudatum, paramecium jenningsi and Paramecium multimicronucleatum

Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1983
Abstract 1. 1. Paramecium caudatum contains a multiple form of hemoglobin (Hb), which is composed of high concentration of a major variant and only a small amount of several minor variants. 2. 2. The electrophoretic mobility and molecular weight of the major variant in P.
Toshiaki Irie, Itaru Usuki
openaire   +2 more sources

The Endosymbionts of Paramecium

CRC Critical Reviews in Microbiology, 1974
AbstractProtozoan cells harbor many different types of endosymbionts. They can be viruses, bacteria, algae, fungi, or even defy classification in relation to free-living organisms. A general description of the types is available in Kirby1 and some are shown in Table 1.
openaire   +3 more sources

Mitochondrial Genetics in Paramecium

Nature, 1972
RESISTANCE to erythromycin and chloramphenicol in yeast has been shown to be controlled by non-Mendelian genetic factors in mitochondrial DNA1,2. Because paramecium has particular advantages for the study of cytoplasmic genetics3, we have made some genetic and biochemical studies on drug-resistant variants of this ciliate, working with syngens 1 and 4 ...
A. Tait, G. H. Beale, J. K. C. Knowles
openaire   +3 more sources

The Cell Surface of Paramecium

1959
Publisher Summary This chapter provides a general description of the structure of the cell surface of Paramecium . The trichocysts, at their tips, are homologous with cilia. If the ciliary corpuscles composing the cell surface are like a layer of packed peas, then the trichocysts underlying the surface in orderly array are somewhat like a second ...
E.L. Powers, C.F. Ehret
openaire   +3 more sources

Chemoreception in Paramecium [PDF]

open access: possible, 1994
Aquatic organisms have the capability of detecting and responding to chemical stimuli. The stimulus can signify the presence of food, mates, predators, or a place to settle and continue development. Unicellular aquatic organisms are not exceptions and as an example, I discuss chemoresponses of Paramecium tetraurelia, a ciliated eukaryotic microorganism.
openaire   +1 more source

A theory of gravikinesis in Paramecium

Advances in Space Research, 1996
The archaic eukaryote unicellular microorganism, Paramecium, is propelled by thousands of cilia, which are regulated by modulation of the membrane potential. Ciliates can successfully cope with gravity, which is the phylogenetically oldest stimulus for living things.
openaire   +3 more sources

Paramecium Biology

2019
Imagine that in 1678 you are Christiaan Huygens or Antonie van Leeuwenhoek seeing paramecia swim gracefully across the field of view of your new microscope. These unicellular, free-living, and swimming cells might have remained a curiosity if not for the ability of H.S. Jennings (Behavior of the lower organisms.
openaire   +2 more sources

The Antigens of Paramecium

1986
The study of antigens in paramecia has yielded valuable genetic information and criteria for showing resemblances and differences in clones, strains, and species of Paramecium and other protozoa. In a number of cases, serological methods have proved to be more precise than certain other methods in demonstrating relationships among organisms.
Ralph Wichterman, Ralph Wichterman
openaire   +2 more sources

Excitation of paramecium

Journal of Mathematical Biology, 1979
In a model analysis the excitation mechanism of Paramecium is simulated. The model is based on a specific Ca channel mechanism located in the ciliary part of the membrane. The Ca2+ permeability depends on transmembrane voltage and the binding of cations to channel subunits.
E. Hildebrand, C. Hook
openaire   +2 more sources

Paramecium aureliaRevisited

Journal of Eukaryotic Microbiology, 2005
Abstract.The speciesParamecium aureliasensu latu, containing 15 sexually isolated subspecies (syngens), is the classic example of a sibling species complex in the ciliates. Using DNA sequence comparison, it is now possible to see whether this example parallels other studied sibling species complexes.
openaire   +3 more sources

Home - About - Disclaimer - Privacy