Results 11 to 20 of about 2,469 (168)

Reconsidering the evidence for learning in single cells

open access: yeseLife, 2021
The question of whether single cells can learn led to much debate in the early 20th century. The view prevailed that they were capable of non-associative learning but not of associative learning, such as Pavlovian conditioning. Experiments indicating the
Samuel J Gershman   +3 more
doaj   +1 more source

The Surface Antigens of Paramecium aurelia [PDF]

open access: yesJournal of General Microbiology, 1956
SUMMARY: A surface antigen preparation obtained from Paramecium aurelia absorbs from a concentrated antiserum approximately 74% of the total antibody absorbed by the intact animal. An antiserum prepared against this preparation immobilized P. aurelia of the same serotype.
R, LITMAN   +4 more
openaire   +2 more sources

A Ninth Variety of Paramecium aurelia [PDF]

open access: yesJournal of General Microbiology, 1954
SUMMARY: A new variety of Paramecium aurelia—variety 9—containing two mating types XVII and XVIII, has been identified from seven samples of water collected in Scotland. Variety 9 belongs to the group A varieties in the Sonneborn system of classification, but shows no interparietal mating reactions.
G H, BEALE, M, SCHNELLER
openaire   +2 more sources

Nuclear events during conjugation in the poorly studied model ciliate Paramecium jenningsi

open access: yesWater Biology and Security, 2023
Ciliated protists are highly differentiated unicellular eukaryotes that possess special sexual processes (conjugation and autogamy) that rely on their unique nuclear dimorphism, i.e., the presence of both a germline micronucleus (MIC) and a somatic ...
Xue Zhang   +11 more
doaj   +1 more source

Coexistence via resource partitioning fails to generate an increase in community function. [PDF]

open access: yesPLoS ONE, 2012
Classic ecological theory suggests that resource partitioning facilitates the coexistence of species by reducing inter-specific competition. A byproduct of this process is an increase in overall community function, because a greater spectrum of resources
John P DeLong, David A Vasseur
doaj   +1 more source

The mitochondrial genomes of the ciliates Euplotes minuta and Euplotes crassus

open access: yesBMC Genomics, 2009
Background There are thousands of very diverse ciliate species from which only a handful mitochondrial genomes have been studied so far. These genomes are rather similar because the ciliates analysed (Tetrahymena spp.
Huynh Minh   +8 more
doaj   +1 more source

Density-and trait-mediated effects of a parasite and a predator in a tri-trophic food web [PDF]

open access: yes, 2014
1. Despite growing interest in ecological consequences of parasitism in food webs, relatively little is known about effects of parasites on long-term population dynamics of non-host species or about whether such effects are density- or trait- mediated ...
Banerji, Aabir   +5 more
core   +5 more sources

Determinación del contenido de proteína y nutracéuticos en la biomasa de Paramecium aurelia

open access: yesEcosistemas y Recursos Agropecuarios, 2016
La investigación se enfocó en la determinación del contenido proteico y nutracéutico en el ciliado de vida libre Paramecium aurelia, que fue aislado de una fuente silvestre y se identi có. Los cultivos axénicos de P.
Manuel Sacristán de Alva   +1 more
doaj   +1 more source

Molecular epidemiology of African sleeping sickness [PDF]

open access: yes, 2009
Human sleeping sickness in Africa, caused by Trypanosoma brucei spp. raises a number of questions. Despite the widespread distribution of the tsetse vectors and animal trypanosomiasis, human disease is only found in discrete foci which periodically give ...
A. TAIT   +5 more
core   +2 more sources

Determinación del contenido de proteína y nutracéuticos en la biomasa de Paramecium aurelia/Determination of protein and nutraceuticals content in the Paramecium aurelia biomass

open access: yesEcosistemas y Recursos Agropecuarios, 2017
. La investigación se enfocó en la determinación del contenido proteico y nutracéutico en el ciliado de vida libre Paramecium aurelia, que fue aislado de una fuente silvestre y se identicó. Los cultivos axénicos de P.
Manuel Sacristán de Alva   +1 more
doaj   +1 more source

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