Patterns of Collective Bacterial Motion in Microfluidic Devices
... swimming E. coli cells to drive currents in well-designed microengineered environments.29 The results foretell that we are on the way towards developing and implementing of microfluidic devices powered by microorganisms.27,28 In the last few decades, the advancement of microfluidic technology revolu ...
... swimming E. coli cells to drive currents in well-designed microengineered environments.29 The results foretell that we are on the way towards developing and implementing of microfluidic devices powered by microorganisms.27,28 In the last few decades, the advancement of microfluidic technology revolu ...
View PDF - CiteSeerX
... results with those acquired from the TC image. The aim of applying image processing to the TC image (Figure 1A) is segmentation of cells from the background and extraction of individual cells from cell clusters to enable data acquisition on a cell-by-cell basis. First, the image background is correc ...
... results with those acquired from the TC image. The aim of applying image processing to the TC image (Figure 1A) is segmentation of cells from the background and extraction of individual cells from cell clusters to enable data acquisition on a cell-by-cell basis. First, the image background is correc ...
Bacillus globigii cell size is influenced by
... PLWCA on the size of B. globigii cells. Filled columns represent the results after 16 h incubation of B. globigii with the peptides; open columns represent the 6 h growth after the 16 h incubations were re-inoculated in fresh medium. *** p \ 0.001. b Typical examples of control cells (left) and cell ...
... PLWCA on the size of B. globigii cells. Filled columns represent the results after 16 h incubation of B. globigii with the peptides; open columns represent the 6 h growth after the 16 h incubations were re-inoculated in fresh medium. *** p \ 0.001. b Typical examples of control cells (left) and cell ...
Technical Information Sheet No.15
... morphological changes arising during the growth cycle, it is also important to examine cultures of different age up to several days. 5. To use only purified agar brands (such as Oxoid Agar No.1, Difco Bacto Agar, and others) since normal agar is often heavily contaminated with bacteria or other part ...
... morphological changes arising during the growth cycle, it is also important to examine cultures of different age up to several days. 5. To use only purified agar brands (such as Oxoid Agar No.1, Difco Bacto Agar, and others) since normal agar is often heavily contaminated with bacteria or other part ...
Motilities Swimming, Swarming, and Twitching Adherent Phenotypic
... flagellum-mediated swimming, flagellum-mediated swarming, and type IV pilus-mediated twitching. A strategy frequently used by bacteria to survive changing environmental conditions is to create a phenotypically heterogeneous population by a mechanism called phase variation. In this report, we describ ...
... flagellum-mediated swimming, flagellum-mediated swarming, and type IV pilus-mediated twitching. A strategy frequently used by bacteria to survive changing environmental conditions is to create a phenotypically heterogeneous population by a mechanism called phase variation. In this report, we describ ...
Non-Invasive Optical Biosensor for Probing Cell Signaling
... without stimulation, cells constantly undergo micromotion – a dynamic movement and remodeling of cellular structure, as observed in tissue culture by time lapse microscopy at the sub-cellular resolution, as well as by bio-impedance measurements at the nanometer level [29]. Under un-stimulated condit ...
... without stimulation, cells constantly undergo micromotion – a dynamic movement and remodeling of cellular structure, as observed in tissue culture by time lapse microscopy at the sub-cellular resolution, as well as by bio-impedance measurements at the nanometer level [29]. Under un-stimulated condit ...
Antibiotics for research
... scientists identifying and isolating active moieties responsible for antibacterial activity. Today antibiotics are widely used in the Life Sciences not only to eliminate contamination, but also to identify bacterial mechanisms of resistance, protein modification and DNA/RNA manipulation to develop n ...
... scientists identifying and isolating active moieties responsible for antibacterial activity. Today antibiotics are widely used in the Life Sciences not only to eliminate contamination, but also to identify bacterial mechanisms of resistance, protein modification and DNA/RNA manipulation to develop n ...
Preliminary evidence of a new microbial species capable of
... also exploit cells themselves. Predatory bacteria have been shown to feed on other bacteria (KL. 2007; Blazkova H 2009), particularly in a limited nutrient environment, (Nandy SK 2006). Experimental results may also be altered due to unwanted activation of cells. Different cellular functions, includ ...
... also exploit cells themselves. Predatory bacteria have been shown to feed on other bacteria (KL. 2007; Blazkova H 2009), particularly in a limited nutrient environment, (Nandy SK 2006). Experimental results may also be altered due to unwanted activation of cells. Different cellular functions, includ ...
Distribution of P2X receptors in the rat adrenal gland
... The immunogens were synthetic peptides representing 15 receptor-type specific amino acids in the C-terminal part of the receptor: P2X1 , amino acid 385–399 (ATSSTLGLQENMRTS); P2X2 , amino acid 458–472 (QQDSTSTDPKGLAQL); P2X3 , amino acid 383–397 (VEKQSTDSGAYSIGH); P2X4 , amino acid 374–388 (YVEDYEQG ...
... The immunogens were synthetic peptides representing 15 receptor-type specific amino acids in the C-terminal part of the receptor: P2X1 , amino acid 385–399 (ATSSTLGLQENMRTS); P2X2 , amino acid 458–472 (QQDSTSTDPKGLAQL); P2X3 , amino acid 383–397 (VEKQSTDSGAYSIGH); P2X4 , amino acid 374–388 (YVEDYEQG ...
Ch. 20.2
... The walls of archaea lack peptidoglycan, and their membranes contain different lipids. The DNA sequences of key archaea genes are more like those of eukaryotes than those of bacteria. Based on these observations, scientists have concluded that archaea and eukaryotes are related more closely to each ...
... The walls of archaea lack peptidoglycan, and their membranes contain different lipids. The DNA sequences of key archaea genes are more like those of eukaryotes than those of bacteria. Based on these observations, scientists have concluded that archaea and eukaryotes are related more closely to each ...
Chapter 11 - My Teacher Site
... • The G protein is loosely attached to cytoplasmic side of membrane • It functions as a molecular switch that is either “on” or “off” • Inactive form: GDP (guanosine diphosphate) is bound to G protein • Active form: GTP (guanosine triphosphate) is bound to G protein • The receptor and G protein work ...
... • The G protein is loosely attached to cytoplasmic side of membrane • It functions as a molecular switch that is either “on” or “off” • Inactive form: GDP (guanosine diphosphate) is bound to G protein • Active form: GTP (guanosine triphosphate) is bound to G protein • The receptor and G protein work ...
Study of adhesive and invasion capacity of some opportunistic
... The purpose of this study was to investigate invasion and adhesion capacity of some E. coli strains to CaCo-2 cells comparatively in the presence/absence of Lactobacillus acidophilus and Bifidobacterium bifidum, which could exhibit an antagonistic effect by preventing the attachment of opportunistic ...
... The purpose of this study was to investigate invasion and adhesion capacity of some E. coli strains to CaCo-2 cells comparatively in the presence/absence of Lactobacillus acidophilus and Bifidobacterium bifidum, which could exhibit an antagonistic effect by preventing the attachment of opportunistic ...
Evidence for Bacteriophages within Gram-negative Cocci
... number of phages and only additional information of tail structures and DNA composition will allow a more profound comparison. One aim of future investigations will be the test of infectivity of these particles for nearly related species of bacteria - and attempts to identify the two phage types by ...
... number of phages and only additional information of tail structures and DNA composition will allow a more profound comparison. One aim of future investigations will be the test of infectivity of these particles for nearly related species of bacteria - and attempts to identify the two phage types by ...
Document
... 1. All three are secreted soluble factors that elicit their biological effects at pM concentrations. 2. Growth factors tend to be produced constitutively, whereas cytokine production is carefully regulated. Cytokines are usually secreted after activation of a particular cell, and secretion is short- ...
... 1. All three are secreted soluble factors that elicit their biological effects at pM concentrations. 2. Growth factors tend to be produced constitutively, whereas cytokine production is carefully regulated. Cytokines are usually secreted after activation of a particular cell, and secretion is short- ...
Cell Transport - HRSBSTAFF Home Page
... Membrane is permeable to water, but impermeable to larger molecules ...
... Membrane is permeable to water, but impermeable to larger molecules ...
MICRORAM: A Simulation Model of a Colony of Bacteria
... Model description In this section we introduce MICRORAM, that is, the algorithm that results once conjugation as well as other biological features is included in a genetic algorithm. The MICRORAM model consists of three elements (Figure 1): ...
... Model description In this section we introduce MICRORAM, that is, the algorithm that results once conjugation as well as other biological features is included in a genetic algorithm. The MICRORAM model consists of three elements (Figure 1): ...
Tagging the dead: a bridging factor for Caenorhabditis elegans
... can use the same transport receptor, which either transfers proteins across the nuclear envelope or targets them to the intraciliary compartment. Nuclear transport and targeting of proteins to primary cilia therefore share common molecular determinants (Fig. 1) and might have evolved from the same a ...
... can use the same transport receptor, which either transfers proteins across the nuclear envelope or targets them to the intraciliary compartment. Nuclear transport and targeting of proteins to primary cilia therefore share common molecular determinants (Fig. 1) and might have evolved from the same a ...
Bacteriophage Multiplication—Dependence on Host Physiology
... The rates of synthesis and assembly of phage components seem to depend on the content of the proteinsynthesizing system, and lysis time seems to depend on cellular dimensions. The similarity to materials corrosion was invoked to develop a model for phage-infected bacterial lysis based on the statist ...
... The rates of synthesis and assembly of phage components seem to depend on the content of the proteinsynthesizing system, and lysis time seems to depend on cellular dimensions. The similarity to materials corrosion was invoked to develop a model for phage-infected bacterial lysis based on the statist ...
3 Chapter 3
... chemical energy in molecules of ATP, which can then be used to power many other cellular processes. ...
... chemical energy in molecules of ATP, which can then be used to power many other cellular processes. ...
Chapter 17
... temperature and transferred into a 384-well polypropylene compound storage plate using a pipettor to prepare a compound source plate. Two separate compound source plates are applied when a two-step assay is performed. 3. The starved cells are washed twice with the assay-buffered solution using the B ...
... temperature and transferred into a 384-well polypropylene compound storage plate using a pipettor to prepare a compound source plate. Two separate compound source plates are applied when a two-step assay is performed. 3. The starved cells are washed twice with the assay-buffered solution using the B ...
OCULAR and STAGE MICROMETERS
... their colorless and transparent nature. The simplest way to increase contrast with the surrounding media was to use dyes which are taken up by the bacterial cells. In 1875, Weigert, a German contemporary of Koch, found that the dye, methyl violet, would color or "stain" bacterial cells in some tissu ...
... their colorless and transparent nature. The simplest way to increase contrast with the surrounding media was to use dyes which are taken up by the bacterial cells. In 1875, Weigert, a German contemporary of Koch, found that the dye, methyl violet, would color or "stain" bacterial cells in some tissu ...
Lecture PowerPoint Show
... • Images used on this resource, and on the SPO website are, wherever possible, credited and linked to their source. Any words underlined and appearing in blue are links that can be clicked on for more information. PowerPoints must be viewed in slide show mode to use the hyperlinks directly. • Severa ...
... • Images used on this resource, and on the SPO website are, wherever possible, credited and linked to their source. Any words underlined and appearing in blue are links that can be clicked on for more information. PowerPoints must be viewed in slide show mode to use the hyperlinks directly. • Severa ...
Ultrastructure of the Infectious and Reproductive
... the external face was almost devoid of intramembranous particles (IMPs), and only a few particles were present on the protoplasmic face (Fig. 3a, b). Also, freeze-etching preparations of the IF exhibited a smooth particle-free external surface (Fig. 3c). In contrast, the protoplasmic face of the out ...
... the external face was almost devoid of intramembranous particles (IMPs), and only a few particles were present on the protoplasmic face (Fig. 3a, b). Also, freeze-etching preparations of the IF exhibited a smooth particle-free external surface (Fig. 3c). In contrast, the protoplasmic face of the out ...
Tyler`s Presentation
... http://www.biol.unt.edu/~chapman/research%20projects/cotton/me tabolic_pathways.htm ...
... http://www.biol.unt.edu/~chapman/research%20projects/cotton/me tabolic_pathways.htm ...
Journal of Bacteriology
... constant in 5- to 14-day-old cultures, but decreased in the 21day-old culture (Table 1). Examination of cells by electron microscopy confirmed that the capsule was polar in early development (Fig. 3a and b) and completely surrounded most cells in 5-day-old cultures (Fig. 3c). The capsule remained in ...
... constant in 5- to 14-day-old cultures, but decreased in the 21day-old culture (Table 1). Examination of cells by electron microscopy confirmed that the capsule was polar in early development (Fig. 3a and b) and completely surrounded most cells in 5-day-old cultures (Fig. 3c). The capsule remained in ...
Chemotaxis
Chemotaxis (from chemo- + taxis) is the movement of an organism in response to a chemical stimulus. Somatic cells, bacteria, and other single-cell or multicellular organisms direct their movements according to certain chemicals in their environment. This is important for bacteria to find food (e.g., glucose) by swimming toward the highest concentration of food molecules, or to flee from poisons (e.g., phenol). In multicellular organisms, chemotaxis is critical to early development (e.g., movement of sperm towards the egg during fertilization) and subsequent phases of development (e.g., migration of neurons or lymphocytes) as well as in normal function. In addition, it has been recognized that mechanisms that allow chemotaxis in animals can be subverted during cancer metastasis.Positive chemotaxis occurs if the movement is toward a higher concentration of the chemical in question; negative chemotaxis if the movement is in the opposite direction. Chemically prompted kinesis (randomly directed or nondirectional) can be called chemokinesis.