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Effects of Organic Cations on the Gram-negative Cell
Effects of Organic Cations on the Gram-negative Cell

... Ga.), S. typhi ggg2v and 12839 were obtained from the American Type Culture Collection. Escherichia coli was obtained as ATCC 10536 and used in the earlier part of this work; after the observation that this culture produced acid but no gas from glucose or lactose, it was replaced with a fresh, gas-f ...
Exclusion of Ribulose-1,5-bisphosphate Carboxylase/oxygenase
Exclusion of Ribulose-1,5-bisphosphate Carboxylase/oxygenase

... (1982) proposed that whole chloroplasts are taken up into the vacuole and that Rubisco is then degraded by vacuolar proteases during dark-induced senescence in wheat. Recently, Minamikawa et al. (2001) have reported a similar phenomenon in French bean leaves that were detached and placed in darkness ...
Evidence for land plant cell wall biosynthetic mechanisms in
Evidence for land plant cell wall biosynthetic mechanisms in

... (Fig. 5, branch point before the E and F clade; Supplementary Data Fig. S7, branch point before the A clade), due to very short branches annotated with a 0.0 score that the algorithm inserts, as it can only make strictly bifurcating trees. For clarification, cosmetic rearrangement of the trees was m ...
Lysosomes and Fas-mediated liver cell death
Lysosomes and Fas-mediated liver cell death

... of DEVDase activity and of unsedimentable sulfite cytochrome c reductase taking place after aFas injection. The unsedimentable activity of β-galactosidase, a reference hydrolase of lysosomes, was estimated to see whether there is a possible rupture of the membranes of these organelles. As shown in F ...
How and why does β-actin mRNA target?
How and why does β-actin mRNA target?

... are related to the regulation of cell motility and polarity. Diaphanous (Castrillon and Wasserman, 1994) is required for cytokinesis, Bni1p is concentrated at the tips of mating projections and can nucleate actin polymerization in vitro (Pruyne et al., 2002; Sagot et al., 2002) and is required for y ...
Areas of Adhesion between Wall and Membrane of
Areas of Adhesion between Wall and Membrane of

... shown in Fig. 2 and can be observed in P1. I, fig. I, 2 and P1. 2, fig. 5. If sections more or less tangential to the surface included the outermost surface of the wall (section plane I , Fig. I), the following structures were encountered: facing the environment the wall had a weakly defined contour ...
nimO is required for the G1/S transition
nimO is required for the G1/S transition

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Chapter 7 Section 4 PowerPoint
Chapter 7 Section 4 PowerPoint

... Copyright © by Holt, Rinehart and Winston. All rights reserved. ...
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Structural requirements of KTS-disintegrins for inhibition of α1β1

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Doubling Tyl Element Copy Number in Saccharomyces
Doubling Tyl Element Copy Number in Saccharomyces

... marked elements in the two studies can be attributed to thefact that in this study, the proportion of marked RNA increases as strains accumulate genomic copies of marked T y elements in the later stagesof the experiment (the previous studies used only a single cycle of galactoseinduction). Phenotypi ...
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... understanding of the cellular basis for allogeneic rejection. Allogeneic organ transplantation has thrived since the mid-20th century resulting in improved patient survival and quality of life. A seeming paradox after burn injury is that in the presence of profound immune dysfunction severely injure ...
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Modulation of oxidative stress as an anticancer strategy

... ROS inducers Hypoxia. Hypoxia arises from an imbalance between oxygen supply and consumption. Major causes of hypoxic stress include a reduced presence or structural abnormality of microvessels supplying nutrients in a tissue, increased distance between the tissue and its nutrition-supplying blood f ...
LIU-THESIS - eCommons@USASK
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... Plant species in the temperate zones are vulnerable to natural low temperatures and cold hardy plants first freeze outside the plasma membrane in the extracellular space of the apoplast (cell wall, middle lamella) (Levitt, 1980). Water inside the cells will then migrate out to freeze in the apoplas ...
role of potassium in human and animal nutrition 2
role of potassium in human and animal nutrition 2

... The proper level of potassium is essential for normal cell function. An abnormal increase in potassium (hyperkalemia) or decrease in potassium (hypokalemia) can profoundly affect the nervous system and heart, and when extreme, can be fatal. The normal blood potassium level is 3.5 to 5.0 milliEquival ...
siRNA Screen Identifies Trafficking Host Factors that Modulate
siRNA Screen Identifies Trafficking Host Factors that Modulate

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Endocytosis Via Caveolae
Endocytosis Via Caveolae

... Caveolae are, moreover, rich in GPI-anchored proteins and several receptor and nonreceptor protein tyrosine kinases (52,53). Since these kinases are involved in signal transduction events, caveolae are thought to constitute especially active sites for signal transmission (9,54,55). Furthermore, some ...
PDF
PDF

... The work was divided into five series of experiments characterized by the developmental stage of embryos used, the region of the ectoderm used as graft and the period of cultivation in the host kidney. The purpose of each series was explained in the Introduction. Series I. Halves of pre-gastrula and ...
Expression of the nidogen-binding site of the laminin γ1 chain
Expression of the nidogen-binding site of the laminin γ1 chain

... production of the basement membrane (Smyth et al., 1999), a structure crucial for the normal development of many epithelia (Murray and Edgar, 2000). Results from a multitude of sources (Paulsson et al., 1987; Mann et al., 1988; Aumailley et al., 1989; Fox et al., 1991; Aumailley et al., 1993) sugges ...
Neural crest-derived stem cells
Neural crest-derived stem cells

... signaling pathway, does not alter smooth muscle or neuronal fate acquisition by neural crest cells, pointing at an involvement of alternative signaling pathways (Buchmann-Moller et al., 2009). Wnt (wingless in Drosophila) acting via the intracellular molecule β-catenin represents a good example of a ...
Phenotypic Heterogeneity Enables Uropathogenic Escherichia coli
Phenotypic Heterogeneity Enables Uropathogenic Escherichia coli

... killing pathogenic bacteria. However, some pathogenic bacteria can maintain infection in mammalian hosts despite inflammation, specific antimicrobial mechanisms, and a robust adaptive immune response and can therefore give rise to persistent infection (1). Uropathogenic Escherichia coli (UPEC) cause ...
Introduction-to-OBO - Buffalo Ontology Site
Introduction-to-OBO - Buffalo Ontology Site

... • Scientists become motivated to commit themselves to developing an ontology falling within their domain of expertise because they themselves will need to use this ontology in their own work in the future. • Forking would erode this motivation ...
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Mitosis



Mitosis is a part of the cell cycle in which chromosomes in a cell nucleus are separated into two identical sets of chromosomes, each in its own nucleus. In general, mitosis (division of the nucleus) is often followed by cytokinesis, which divides the cytoplasm, organelles and cell membrane into two new cells containing roughly equal shares of these cellular components. Mitosis and cytokinesis together define the mitotic (M) phase of an animal cell cycle—the division of the mother cell into two daughter cells, genetically identical to each other and to their parent cell.The process of mitosis is divided into stages corresponding to the completion of one set of activities and the start of the next. These stages are prophase, prometaphase, metaphase, anaphase, and telophase. During mitosis, the chromosomes, which have already duplicated, condense and attach to fibers that pull one copy of each chromosome to opposite sides of the cell. The result is two genetically identical daughter nuclei. The cell may then divide by cytokinesis to produce two daughter cells. Producing three or more daughter cells instead of normal two is a mitotic error called tripolar mitosis or multipolar mitosis (direct cell triplication / multiplication). Other errors during mitosis can induce apoptosis (programmed cell death) or cause mutations. Certain types of cancer can arise from such mutations.Mitosis occurs only in eukaryotic cells and the process varies in different organisms. For example, animals undergo an ""open"" mitosis, where the nuclear envelope breaks down before the chromosomes separate, while fungi undergo a ""closed"" mitosis, where chromosomes divide within an intact cell nucleus. Furthermore, most animal cells undergo a shape change, known as mitotic cell rounding, to adopt a near spherical morphology at the start of mitosis. Prokaryotic cells, which lack a nucleus, divide by a different process called binary fission.
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