![Dadkhah and Najmabadi2](http://s1.studyres.com/store/data/010755688_1-4ea01d64155e055e7d3e434cc6bfafcc-300x300.png)
Dadkhah and Najmabadi2
... ellagitannins or Ellagic acid and citric acid. Strawberry ellagitannins slow the growth of abnormal colon cells in humans (Ulanowska et al2007). These ellagitannins protect human cells against cancer-causing agents in tobacco smoke, food additives, and petroleum-based substances. Ellagitannins act ...
... ellagitannins or Ellagic acid and citric acid. Strawberry ellagitannins slow the growth of abnormal colon cells in humans (Ulanowska et al2007). These ellagitannins protect human cells against cancer-causing agents in tobacco smoke, food additives, and petroleum-based substances. Ellagitannins act ...
Dynamics of intracellular bacterial replication at the single cell level
... Communicated by Pascale Cossart, Institut Pasteur, Paris, France, January 5, 2010 (received for review September 23, 2009) ...
... Communicated by Pascale Cossart, Institut Pasteur, Paris, France, January 5, 2010 (received for review September 23, 2009) ...
Management of the Oral Infection: Part 1
... days, a biofilm may contain up to 1011 microorganisms/mL.7 In relation to this fact, oral hard tissue disease in the form of apical periodontal infection and marginal periodontitis has been associated with 200 to 500 bacterial species.8,9,10 Bacterial interaction within a biofilm may either boost or ...
... days, a biofilm may contain up to 1011 microorganisms/mL.7 In relation to this fact, oral hard tissue disease in the form of apical periodontal infection and marginal periodontitis has been associated with 200 to 500 bacterial species.8,9,10 Bacterial interaction within a biofilm may either boost or ...
Purple Bacteria
... Capable of growing with H2 as sole electron donor and O2 as electron acceptor, Many of them can also grow autotrophically using Calvin cycle to fix CO2, All contain hydrogenase for binding H2 and use it to produce ATP, Can grow both chemoorganotrophs and chemolithotrophs, Most are obligate ...
... Capable of growing with H2 as sole electron donor and O2 as electron acceptor, Many of them can also grow autotrophically using Calvin cycle to fix CO2, All contain hydrogenase for binding H2 and use it to produce ATP, Can grow both chemoorganotrophs and chemolithotrophs, Most are obligate ...
Pseudomonas putida in the wheat Detection of recombinant
... ribosomal rRNA has enabled distinctions between bacteria and non-bacteria species in soil (Christensen et al. 1999; Dorn et al. 2003) and type I and II methanotrophs in lake sediments (Kalyuzhnaya et al. 2006). Previous studies have reported the use of confocal microscopy with FISH to monitor endoba ...
... ribosomal rRNA has enabled distinctions between bacteria and non-bacteria species in soil (Christensen et al. 1999; Dorn et al. 2003) and type I and II methanotrophs in lake sediments (Kalyuzhnaya et al. 2006). Previous studies have reported the use of confocal microscopy with FISH to monitor endoba ...
Microbiology Laboratories Report on Training Visit
... dishes, Petri plates) media form masses of cells called colonies. A colony is a large number of cells on solid medium, which is visible to the naked eye as a discrete entity. The assumption is that each viable bacterial cell is separate from all others and will develop into a single discrete colony. ...
... dishes, Petri plates) media form masses of cells called colonies. A colony is a large number of cells on solid medium, which is visible to the naked eye as a discrete entity. The assumption is that each viable bacterial cell is separate from all others and will develop into a single discrete colony. ...
Interaction of Bacterial Populations in Coupled Microchambers
... studying interacting bacterial populations is presented in this work. Bacterial cultures were grown in a device within distinct microchambers and channels that are separated by porous membranes. This membrane acts as a physical boundary for the populations in each chamber, nevertheless it enables ch ...
... studying interacting bacterial populations is presented in this work. Bacterial cultures were grown in a device within distinct microchambers and channels that are separated by porous membranes. This membrane acts as a physical boundary for the populations in each chamber, nevertheless it enables ch ...
Annals of Microbiology
... many thin peritrichous flagella. In aged dark cultures, small cells appeared within cyst-like forms. The bacteria used the polar flagellum to adhere to the epidermis, root hair and root cap areas of tomato roots. They also penetrated the epidermis, root hairs and outer cortex cells. Within the root, ...
... many thin peritrichous flagella. In aged dark cultures, small cells appeared within cyst-like forms. The bacteria used the polar flagellum to adhere to the epidermis, root hair and root cap areas of tomato roots. They also penetrated the epidermis, root hairs and outer cortex cells. Within the root, ...
IDENTIFICATION OF BACTERIA ASSOCIATED WITH
... gram-negative proteobacteria Escherichia coli (Schönhuber et al. 1997) and free-living marine cyanobacteria, which have thicker cell walls (Schönhuber et al. 1999). Observation of in situ hybridized cells with a standard epifluorescence microscope does not allow the unambiguous localization of bacte ...
... gram-negative proteobacteria Escherichia coli (Schönhuber et al. 1997) and free-living marine cyanobacteria, which have thicker cell walls (Schönhuber et al. 1999). Observation of in situ hybridized cells with a standard epifluorescence microscope does not allow the unambiguous localization of bacte ...
lytic cycle.
... put their genes into a host cell, but new viruses are not made right away. New cells get copies of the virus’s genes when the host cell divides. The genes stay inactive for a long time before they “go lytic” making huge numbers of copies of the virus. Chapter menu ...
... put their genes into a host cell, but new viruses are not made right away. New cells get copies of the virus’s genes when the host cell divides. The genes stay inactive for a long time before they “go lytic” making huge numbers of copies of the virus. Chapter menu ...
Clostridium Species as Metallic Copper
... 2009a). These findings point towards an active role of bacteria in CuNP formation. Biomineralization of CuNP was attributed to CuC export from bacterial cells via a Cu homeostasis reaction followed by CuC disproportionation near the cell (Weber et al. 2009a). Metallic Cu was recently also observed to ...
... 2009a). These findings point towards an active role of bacteria in CuNP formation. Biomineralization of CuNP was attributed to CuC export from bacterial cells via a Cu homeostasis reaction followed by CuC disproportionation near the cell (Weber et al. 2009a). Metallic Cu was recently also observed to ...
3-2014 BIOL 20 Microbiology
... critically analyze topics discussed in class. B. Construct a dichotomous key to seperate the following organisms: Anabaena, Anopholes, Balantidium coli, Clonorchis sinensis, Giardia lambia, Rhizopus stolonifera, Taenia pisiformis, Trichinella spiralis, Trypanosoma gambiense. C. Describe the processe ...
... critically analyze topics discussed in class. B. Construct a dichotomous key to seperate the following organisms: Anabaena, Anopholes, Balantidium coli, Clonorchis sinensis, Giardia lambia, Rhizopus stolonifera, Taenia pisiformis, Trichinella spiralis, Trypanosoma gambiense. C. Describe the processe ...
Slide 1 - Cloudfront.net
... and animals if decomposers did not recycle nutrients? • Plants would drain the soil of minerals and die, and animals that depend on plants for food would starve. ...
... and animals if decomposers did not recycle nutrients? • Plants would drain the soil of minerals and die, and animals that depend on plants for food would starve. ...
The effect of bacteria on the sensitivity of microalgae to copper in
... Although single-species laboratory toxicity tests with microalgae are sensitive and highly reproducible, they lack environmental realism. Interactions between algae and their associated bacteria, either in the plankton or in biofilms, may alter algal sensitivity to contaminants, which are not mimick ...
... Although single-species laboratory toxicity tests with microalgae are sensitive and highly reproducible, they lack environmental realism. Interactions between algae and their associated bacteria, either in the plankton or in biofilms, may alter algal sensitivity to contaminants, which are not mimick ...
Microbiology Section C
... (ii) State a function of B. (iii) State a function of C. (iv) What term is used to describe the nutrition of Rhizopus? Explain the importance of this type of nutrition in nature. (v) To what kingdom does Rhizopus belong? (vi) Name another organism that you have studied in your biology course that be ...
... (ii) State a function of B. (iii) State a function of C. (iv) What term is used to describe the nutrition of Rhizopus? Explain the importance of this type of nutrition in nature. (v) To what kingdom does Rhizopus belong? (vi) Name another organism that you have studied in your biology course that be ...
View Full Text-PDF
... study was conducted to determine antimicrobial susceptibility pattern of bacterial isolates from wound infection and their sensitivity to antimicrobial agents. The study was carried out from Jan 2015 to July 2015 in a tertiary care centre located in remote settings of Mewat. Wound swabs and pus samp ...
... study was conducted to determine antimicrobial susceptibility pattern of bacterial isolates from wound infection and their sensitivity to antimicrobial agents. The study was carried out from Jan 2015 to July 2015 in a tertiary care centre located in remote settings of Mewat. Wound swabs and pus samp ...
Testing Artificial Gene Design to Inhibit the Growth of E. cole As an
... The widespread use of traditional antibiotics has promoted the growth of resistant strains of bacteria. (Neu, 1192) Bacteria have not experienced similar natural environmental pressures, such as those created by antibiotics, in the past. As a result, novel antibiotic processes are needed to create f ...
... The widespread use of traditional antibiotics has promoted the growth of resistant strains of bacteria. (Neu, 1192) Bacteria have not experienced similar natural environmental pressures, such as those created by antibiotics, in the past. As a result, novel antibiotic processes are needed to create f ...
Listeria: A foodborne pathogen that knows how to survive
... have all been associated with Listeria contamination (Rocourt and Cossart, 1997). Foods such as soft cheeses, hot dogs and seafood have been implicated in several outbreaks of human listeriosis. Listeria is a Gram-positive pathogen, with the ability to adapt to a wide range of conditions such as ref ...
... have all been associated with Listeria contamination (Rocourt and Cossart, 1997). Foods such as soft cheeses, hot dogs and seafood have been implicated in several outbreaks of human listeriosis. Listeria is a Gram-positive pathogen, with the ability to adapt to a wide range of conditions such as ref ...
11 bacterial identification tests
... coagulase-negative species. S. aureus strains are capable of coagulating plasma in the tube test and will produce clumps of cells in the slide test. The coagulase test can be performed using two different procedures - Slide test and tube test. The slide test is simple, giving results within 10 secon ...
... coagulase-negative species. S. aureus strains are capable of coagulating plasma in the tube test and will produce clumps of cells in the slide test. The coagulase test can be performed using two different procedures - Slide test and tube test. The slide test is simple, giving results within 10 secon ...
Sentinel cells, symbiotic bacteria and toxin resistance in the social
... spore population, and can be compared with mammalian immune cells, such as neutrophils and macrophages [13], or liver cells [14]. In most wild D. discoideum clones, the multicellular fruiting body is effectively purged of all bacteria, presumably by the sentinel cell system. However, about one-third ...
... spore population, and can be compared with mammalian immune cells, such as neutrophils and macrophages [13], or liver cells [14]. In most wild D. discoideum clones, the multicellular fruiting body is effectively purged of all bacteria, presumably by the sentinel cell system. However, about one-third ...
Binding Sites for Bacterial Flagella at the Surface of the Soil Amoeba
... termed pili. There is persuasive evidence that these pili can recognize particular chemical groups on the surface, for example, of epithelial cells and thus, through a stereospecific interaction, secure adherence to the eukaryote as a first step in colonization. It is known that the pili of Escheric ...
... termed pili. There is persuasive evidence that these pili can recognize particular chemical groups on the surface, for example, of epithelial cells and thus, through a stereospecific interaction, secure adherence to the eukaryote as a first step in colonization. It is known that the pili of Escheric ...
Assessing the effect of different shapes of glyco
... resonance band and ease of characterization by UV-visible and transmission electron microscopy (TEM).10 Moreover, they are less toxic compared to quantum dots. Penadés and co-workers used AuNPs to decorate more than one sugar to target HIV, bacteria, modulation of immune responses, and CPIs.11 Simi ...
... resonance band and ease of characterization by UV-visible and transmission electron microscopy (TEM).10 Moreover, they are less toxic compared to quantum dots. Penadés and co-workers used AuNPs to decorate more than one sugar to target HIV, bacteria, modulation of immune responses, and CPIs.11 Simi ...
this PDF file
... chloramphenicol, ampicillin, ofloxacin, cephalexin, and gentamicin using the Kirby-Bauer disk diffusion method. The antimicrobial potential of Camellia sinensis, Juglans regia, and Hippophae rhamnoides alone and in combination with antibiotics were examined using the disk diffusion method, where the ...
... chloramphenicol, ampicillin, ofloxacin, cephalexin, and gentamicin using the Kirby-Bauer disk diffusion method. The antimicrobial potential of Camellia sinensis, Juglans regia, and Hippophae rhamnoides alone and in combination with antibiotics were examined using the disk diffusion method, where the ...
Mesosomes of Bacillus Species, Seen by Negative Staining
... The electron microscope was focused on the flagella in the lower part of the Figure. When printed, this area was exposed longer than the bacterium to make the flagella clearly visible. In an attempt to reduce the structural damage assumed to have occurred during negative staining, the cultures were ...
... The electron microscope was focused on the flagella in the lower part of the Figure. When printed, this area was exposed longer than the bacterium to make the flagella clearly visible. In an attempt to reduce the structural damage assumed to have occurred during negative staining, the cultures were ...
Osmoregulation in Halophilic Bacteria
... of magnesium and calcium due to the presence of high levels of carbonate. Increased carbonate concentrations lead to the formation of soda lakes, which have pH-values well above 10 (e.g., the Wadi Natrun in Egypt). Microflora have been found in all of the above types of saline waters, indicating tha ...
... of magnesium and calcium due to the presence of high levels of carbonate. Increased carbonate concentrations lead to the formation of soda lakes, which have pH-values well above 10 (e.g., the Wadi Natrun in Egypt). Microflora have been found in all of the above types of saline waters, indicating tha ...
Biofilm
![](https://commons.wikimedia.org/wiki/Special:FilePath/Staphylococcus_aureus_biofilm_01.jpg?width=300)
A biofilm is any group of microorganisms in which cells stick to each other on a surface. These adherent cells are frequently embedded within a self-produced matrix of extracellular polymeric substance (EPS). Biofilm extracellular polymeric substance, which is also referred to as slime (although not everything described as slime is a biofilm), is a polymeric conglomeration generally composed of extracellular DNA, proteins, and polysaccharides. Biofilms may form on living or non-living surfaces and can be prevalent in natural, industrial and hospital settings. The microbial cells growing in a biofilm are physiologically distinct from planktonic cells of the same organism, which, by contrast, are single-cells that may float or swim in a liquid medium.Microbes form a biofilm in response to many factors, which may include cellular recognition of specific or non-specific attachment sites on a surface, nutritional cues, or in some cases, by exposure of planktonic cells to sub-inhibitory concentrations of antibiotics. When a cell switches to the biofilm mode of growth, it undergoes a phenotypic shift in behavior in which large suites of genes are differentially regulated.