Results 161 to 170 of about 8,047 (197)
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1996
Our understanding of the biology of ciliate pheromones, and of the primary functions of the mating-type mechanism regulated by these molecules, has given rise to radical conflicts of opinion among different investigators, as regards interpretation of phenomena, definition of basic concepts, and use of terminology.
LUPORINI, Pierangelo +3 more
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Our understanding of the biology of ciliate pheromones, and of the primary functions of the mating-type mechanism regulated by these molecules, has given rise to radical conflicts of opinion among different investigators, as regards interpretation of phenomena, definition of basic concepts, and use of terminology.
LUPORINI, Pierangelo +3 more
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Chemical Signaling in Ciliates
Journal of Eukaryotic Microbiology, 1995ABSTRACT. For long, our knowledge of the biology of ciliate pheromones has long relied solely upon the study of the two structurally unrelated “gamones” identified in culture filtrates of a Blepharisma species. However, the characterization of a number of polypeptide pheromones secreted by Euplotes raikovi and E. octocarinatus has now established that
LUPORINI, Pierangelo +3 more
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Flow patterns around ciliated microorganisms and in ciliated ducts
Journal of Theoretical Biology, 1982Abstract Microscopic organisms and tracts of ciliated epithelia often generate complicated flow patterns such as eddies or jet-like phenomena. In addition, the presence of boundaries (e.g. microscope slide or coverslip) may also influence or severely restrict the resulting fluid motion.
G.K. Aldis +5 more
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Clinics in Laboratory Medicine, 1999
This article includes information on two human parasites, one protozoan flagellate, Giardia lamblia, and one ciliate, Balantidum coli. Both are transmitted through ingestion of food and water contaminated with fecal material. G. lamblia may be the most common intestinal protozoan found in humans throughout the world and causes a wide range of symptoms,
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This article includes information on two human parasites, one protozoan flagellate, Giardia lamblia, and one ciliate, Balantidum coli. Both are transmitted through ingestion of food and water contaminated with fecal material. G. lamblia may be the most common intestinal protozoan found in humans throughout the world and causes a wide range of symptoms,
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Symbionts of Ciliates and Ciliates as Symbionts
Indian Journal of MicrobiologyEndosymbiotic relationships between ciliates and others are critical for their ecological roles, physiological adaptations, and evolutionary implications. These can be obligate and facultative. Symbionts often provide essential nutrients, contribute to the ciliate's metabolism, aid in digestion, and offer protection against predators or environmental ...
Jyoti Dagar +7 more
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1993
The existence of genetic variety affecting phenotype represents the presupposition for selection to operate and then for evolution to accomplish. Two means of achieving genetic variety can be basically distinguished: mutation and recombination. Both confer flexibility to the organisms enabling them to change as environmental conditions inevitably ...
DINI, FERNANDO, NYBERG D.
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The existence of genetic variety affecting phenotype represents the presupposition for selection to operate and then for evolution to accomplish. Two means of achieving genetic variety can be basically distinguished: mutation and recombination. Both confer flexibility to the organisms enabling them to change as environmental conditions inevitably ...
DINI, FERNANDO, NYBERG D.
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American Journal of Obstetrics and Gynecology, 1968
Abstract The occurrence of cilia in endometrim that is normal, hyperplastic, atrophic, and adenocarcinomatous has been studied. Cilia are frequent in normal cyclic endometria and in hyperplastic endometria, are less frequent in those exhibiting atrophy, and are rare in carcinomatous endometria.
Duane N. Tweeddale +2 more
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Abstract The occurrence of cilia in endometrim that is normal, hyperplastic, atrophic, and adenocarcinomatous has been studied. Cilia are frequent in normal cyclic endometria and in hyperplastic endometria, are less frequent in those exhibiting atrophy, and are rare in carcinomatous endometria.
Duane N. Tweeddale +2 more
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CILIATED ADENOCARCINOMA OF THE ENDOMETRIUM
Acta Obstetricia et Gynecologica Scandinavica, 1985Abstract. Two cases of ciliated endometrial adenocarcino‐ma which came to attention in less than one year are described. This entity deserves emphasis, as its ciliation may distract from its histological malignant features. Association of cilia with atypical nuclear features in the same cell is the diagnostic characteristic which distinguishes it from
Helmut Haibach +2 more
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The ciliated human keratinocyte
Journal of Ultrastructure Research, 1984Human keratinocytes were investigated for the presence of single cilia. Almost all basal keratinocytes were found to carry a single cilium in normal, occluded, and psoriatic skin. The ciliary structure was progressively reduced in keratinocytes approaching the surface. No remnants of the ciliary apparatus were found in the granular layer.
Rolf Elofsson +3 more
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Biosystems, 1991
Karyorelict ciliates have near diploid somatic nuclei (macronuclei) incapable of division. If selective pressure favors nuclear division, how could such macronuclei have evolved? I propose that they initially evolved in the context of a diplophase stage that consisted entirely of a non-dividing trophont that was terminated by the induction of meiosis ...
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Karyorelict ciliates have near diploid somatic nuclei (macronuclei) incapable of division. If selective pressure favors nuclear division, how could such macronuclei have evolved? I propose that they initially evolved in the context of a diplophase stage that consisted entirely of a non-dividing trophont that was terminated by the induction of meiosis ...
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