This phenomenon was termed "autoinduction" because it involved a molecule (autoinducer) that accumulated in a growth medium and ... As the density of quorum sensing bacterial cells increases so does the concentration of the autoinducer. Detection of signal ... Sporulation, on the other hand, is a physiological response of B. subtilis to depletion of nutrients within a particular ... Quorum sensing is a phenomenon that allows both Gram-negative and Gram-positive bacteria to sense one another and to regulate a ...
Jayaraman R (2008). "Bacterial persistence: some new insights into an old phenomenon" (PDF). J Biosci. 33 (5): 795-805. doi: ... Persister cells have entered a non- or extremely slow-growing physiological state which makes them insensitive (refractory or ... Bacterial multidrug or antibiotic tolerance poses medically important challenges. It is largely responsible for the inability ... Multidrug tolerance can be caused by a reversible physiological state in a small subpopulation of genetically identical cells, ...
Bacterial resistance to phage puts pressure on the phage to develop stronger effects on the bacteria. The Red Queen hypothesis ... In the mid 1910s, when phage were first discovered, the concept of phage was very much a whole-culture phenomenon (like much of ... and physiological ecology under the heading of phage "organismal" ecology. However, as noted, these subdisciplines are not as ... As a rule of thumb, many phage biologists expect that phage population densities will exceed bacterial densities by a ratio of ...
Though this phenomenon is subtle, it is important for understanding the physiological roles of AP superfamily enzymes, and also ... Bacterial NPP is thought to localize to the periplasm. The catalytic site of NPP consists of a two-metal-ion (bimetallo) Zn2+ ... Goding, James W.; Grobben, Bert; Slegers, Herman (2003). "Physiological and pathophysiological functions of the ecto-nucleotide ...
... researchers identify and develop new tools for the investigation of biologically relevant processes and phenomena. Structural ... Official site Federation European Physiological Societies Official site European Federation for Pharmaceutical Sciences ... attention is given to the investigation into the molecular mechanisms of muscle contraction and the infection with bacterial ...
By contrast, in vivo experiments can provide information about the physiological role of a protein in the context of a cell or ... Lectins typically play a role in biological recognition phenomena involving cells and proteins.[35] Receptors and hormones are ... "Green fluorescent protein as a reporter for macromolecular localization in bacterial cells". Methods (San Diego, Calif.). 20 ...
Alexander Chizhevsky Bacterial circadian rhythms Biological clock (aging) Circannual cycle Circaseptan, 7-day biological cycle ... Chronobiology is a field of biology that examines periodic (cyclic) phenomena in living organisms and their adaptation to solar ... ISBN 978-0-471-56802-5. "Effects of circadian rhythm phase alteration on physiological and psychological variables: ... They have even been found in bacteria, especially among the cyanobacteria (aka blue-green algae, see bacterial circadian ...
"We did not set out with the idea in mind of studying the immunological consequences of the phenomenon described by Owen; on the ... Oral tolerance may depend on the same mechanisms of peripheral tolerance that limit inflammation to bacterial antigens in the ... Immune tolerance encompasses the range of physiological mechanisms by which the body reduces or eliminates an immune response ... The phenomenon of immune tolerance was first described by Ray D. Owens in 1945, who noted that dizygotic twin cattle sharing a ...
Lenski chose an E. coli strain that reproduces only asexually, lacks any plasmids that could permit bacterial conjugation, and ... nor did the physiological characteristics in transport assays of Hall's Cit+ mutants match those to be expected for aerobic ... evolution has presented new phenomena to study, and as technology and methodological techniques have advanced. The use of E. ... and physiological levels. The bacteria can also be frozen and preserved while remaining viable. This has permitted the creation ...
This topic was finally able to be studied thoroughly under physiological shear stress conditions using a typical flow chamber.[ ... Thomas WE, Trintchina E, Forero M, Vogel V, Sokurenko EV (June 2002). "Bacterial adhesion to target cells enhanced by shear ... Selectins (E-selection, L-selection, and P-selectin) were found to be involved in this phenomenon. The shear threshold ... Thomas WE, Trintchina E, Forero M, Vogel V, Sokurenko EV (June 2002). "Bacterial adhesion to target cells enhanced by shear ...
ESA Molecular and physiological analysis of bacterial samples isolated from manned spacecraft (SAMPLE) - ESA SAMPLE - ESA Study ... Observation of environmental phenomena (IMEDIAS) A demonstration of physical phenomena in space. (VIDEO) Amateur Radio on ISS ( ... Molecular and physiological analysis of bacterial samples isolated from manned spacecraft (SAMPLE) SAMPLE Study of the ... ESA Physiological parameters that predict orthostatic intolerance after spaceflight (AORTA) - ESA Physiological parameters that ...
The phenomenon of immune tolerance was first described by Ray D. Owens in 1945, who noted that dizygotic twin cattle sharing a ... Oral tolerance may depend on the same mechanisms of peripheral tolerance that limit inflammation to bacterial antigens in the ... Reactions are mounted, however, to pathogenic microbes and microbes that breach physiological barriers. Peripheral mucosal ... It is used to describe the phenomenon underlying discrimination of self from non-self, suppressing allergic responses, allowing ...
The phenomenon has long been known in animals and plants. Heterosis appears to be largely due to genetic complementation, that ... "Physiological studies of conditional lethal mutants of bacteriophage T4D". Cold Spring Harbor Symp. Quant. Biol. 28: 375-394. ... In this case the test depends on mixed infections of host bacterial cells with two different bacteriophage mutant types. Its ...
Bacterial alkaline phosphatase (BAP) is the most active of the enzymes, but also the most difficult to destroy at the end of ... As its name indicates, ALP functions best under alkaline pH environments and has the physiological role of dephosphorylating ... Horiuchi T, Horiuchi S, Mizuno D (May 1959). "A possible negative feedback phenomenon controlling formation of alkaline ... Some complexities of bacterial regulation and metabolism suggest that other, more subtle, purposes for the enzyme may also play ...
This parallels the phenomenon of osteophagy in birds, in which snail shells are ingested by egg-laying females to supplement ... Over the next several years, he was able to show that a bacterial strain living in the decomposing carcasses, Clostridium ... Therefore, it would be expected that the increased physiological needs of juvenile and gravid female tortoises would also ... This lack of protein during winter conditions can be attributed to the scarcity of animal proteins, a phenomenon that occurs in ...
... is a pathological symptom and should be distinguished from physiological afterimages, a common and benign phenomenon ... Arnold, RW; Janis, B; Wellman, S; Crouch, E; Rosen, C (Jan-Mar 1999). "Palinopsia with bacterial brain abscess and Noonan ... Physiological afterimages appear when viewing a bright stimulus and shifting visual focus. For example, after staring at a ... Physiological afterimages are usually the complementary color of the original stimulus (negative afterimage), while palinoptic ...
Another observed metabolic phenomenon is the cooperation between Geobacter species, in which several species cooperate in ... Detailed functional genomic/physiological studies on one species, G. sulfurreducens was conducted. Genome-based models of ... Geobacter species are anaerobic respiration bacterial species which have capabilities that make them useful in bioremediation. ... several Geobacter species that are able to predict physiological responses under different environmental conditions are ...
... cell phenomena, and immunity G05 - genetic processes G06 - biochemical phenomena, metabolism, and nutrition G07 - physiological ... bacterial infections and mycoses C02 - virus diseases C03 - parasitic diseases C04 - neoplasms C05 - musculoskeletal diseases ... chemical and pharmacologic phenomena G13 - genetic phenomena G14 - genetic structures H - Physical Sciences H01 - natural ... psychological phenomena and processes F03 - mental disorders F04 - behavioral disciplines and activities G - Biological ...
One factor in deployment is low level physiological control by proinflammatory cytokines such as IL-1 triggered by bacterial ... incorporation of cost-benefit calculations into body regulation provides a science grounded approach to mind-body phenomena ... The brain controls such physiological process through top-down regulation. External treatment and the availability of support ... Noakes TD (June 2000). "Physiological models to understand exercise fatigue and the adaptations that predict or enhance ...
... cellular phenomena, seeding and sorting of single cells, and recapitulation of physiological parameters Integration of ... and bacterial cells. A challenge in optical detection is the need for integrating detectors and photodiodes in a miniaturized ... Manipulation of small fluid droplets occurs via electrowetting, which is the phenomenon where an electric field changes the ... and portable applications in developing countries An interesting approach combining electrokinetic phenomena and microfluidics ...
The transfer of bacterial DNA is under the control of the bacteriophage's genes rather than bacterial genes. Conjugation in the ... For a bacterium to bind, take up and recombine donor DNA into its own chromosome, it must first enter a special physiological ... a phenomenon known as quorum sensing. Biofilms may be highly heterogeneous and structurally complex and may attach to solid ... Other aspects of bacterial cooperation-such as bacterial conjugation and quorum-sensing-mediated pathogenicity, present ...
As described above in the case of a plant, similar mechanisms exist in a bacterial cell, a choanoflagellate, a fungal hypha, or ... Fromm, J; Lautner, S (2007). "Electrical signals and their physiological significance in plants". Plant Cell Environ. 30 (3): ... Many plants exhibit certain phenomena at specific times of the day; for example, certain flowers open only in the mornings. ... cellular and physiological levels to understand plant development and behaviour. The neurobiological view sees plants as ...
Kerr JF, Wyllie AH, Currie AR (Aug 1972). "Apoptosis: a basic biological phenomenon with wide-ranging implications in tissue ... Apoptosis occurs in many physiological and pathological processes. It plays an important role during embryonal development as ... bacterial expression, functional characterization and tissue distribution". FEBS Letters. 579 (3): 633-7. doi:10.1016/j.febslet ...
doi:10.2478/s11536-012-0130-9. Alberts B, Johnson A, Lewis J, Walter P, Raff MC (2002). "Bacterial Chemotaxis Depends on a Two- ... Köhidai L (1999). "Chemotaxis: the proper physiological response to evaluate phylogeny of signal molecules". Acta Biologica ... it is possible to describe the basic phenomenon of chemotaxis-driven motion in a straightforward way. Indeed, let us denote ... The presence of structural pore scale heterogeneities has an extra impact on the emerging bacterial patterns. A wide range of ...
This type of regeneration is common in physiological situations. Examples of physiological regeneration are the continual ... While reparative regeneration is a rare phenomenon in mammals, it does occur. A well-documented example is regeneration of the ... "Parameters governing bacterial regeneration and genetic recombination after fusion of Bacillus subtilis protoplasts". Journal ... Similar to the physiological regeneration of hair in mammals, birds can regenerate their feathers in order to repair damaged ...
Diseases may also be vectored by invasive insects such as the Asian citrus psyllid and the bacterial disease citrus greening.[ ... Invasion of long-established ecosystems by organisms from distant bio-regions is a natural phenomenon, which has likely been ... "Pseudo-nitzschia physiological ecology, phylogeny, toxicity, monitoring and impacts on ecosystem health". Harmful Algae. 14: ... Citrus greening is a bacterial disease vectored by the invasive Asian citrus psyllid (ACP). Because of the impacts of this ...