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Frost Resistance in Algae Cells
Frost Resistance in Algae Cells

... Frost resistance in plant ce11s has long been the objective of investigations and various theories for the mechanism of resistance have been presented by many botanists (Levitt, 1956). With algae ce11s, however, research on frost resistance has been rather limited up to the present and the mechanism ...
RECQ5 helicase promotes resolution of conflicts between
RECQ5 helicase promotes resolution of conflicts between

... et al., 2013). ERFS fragility is also dependent on the level of transcription activity at these loci, suggesting that it is driven by replication-transcription encounters (Barlow et al., 2013). Despite accumulating evidence that conflicts between replication and transcription are frequent events in ...
PDF
PDF

... regulate Ndc10p, Biggins and coworkers proposed that Ipl1 had a function in regulating kinetochore/microtubule attachments through Ndc10p. This work highlighted the importance of reversible phosphorylation by Aurora kinases as a crucial mechanism in the regulation of mitotic events, a subject that h ...
Chapter 6 Cell - SCF Faculty Site Homepage
Chapter 6 Cell - SCF Faculty Site Homepage

... 1. All organisms are composed of one or more cells ...
Transcription factor AP-2 is tissue-specific in
Transcription factor AP-2 is tissue-specific in

... reaction with antiserum to the DNA-binding region, suggesting that binding of the antibody to KTF-1 prevented access of the DNA probe to its binding site. In the reaction with antiserum to the carboxyl-terminal region, the migration of the DNA-protein complex was obviously, and reproducibly, retarde ...
Protozoa as Model System for Studies of
Protozoa as Model System for Studies of

... accumulate in shady or dark areas. The observed photobehaviour is largely the result of a step-up photophobic response displayed by both ciliates, although other behavioral reactions like phototaxis or photokinesis may also contribute to the photodispersal. The photophobic response caused by a sudde ...
- Wiley Online Library
- Wiley Online Library

... long carboxyterminal tail (underlined in Fig.1; Olkkonen et al., 1994; Paduch et al., 2001; Pereira-Leal and Seabra, 2001). The four highly conserved domains (Fig. 1, marked in yellow) and the effector domain (Fig. 1; marked in blue) locate to the five polypeptide loops (G1 to G5). The domain in the ...
Studies on the Bacterial Component of Soybean Root
Studies on the Bacterial Component of Soybean Root

... cells. Remnants of host nuclei were still visible and there were several small vacuoles in the host cytoplasm of bacteroid-containing cells. Electron micrographs of thin sections of similar nodules revealed the bacteroids lying within a membrane system in the host cytoplasm, Individual bacteroids ly ...
Chapter 2 - William Stallings, Data and Computer
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Early Morphogenesis of the Caenorhabditis elegans Pharynx
Early Morphogenesis of the Caenorhabditis elegans Pharynx

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Actin Filaments of Guard Cells Are Reorganized
Actin Filaments of Guard Cells Are Reorganized

... Actin filaments and microtubules in plant cells are often taken in the process of ABA treatment showed large variintimately associated in the cell cortex, and their stability is ations in stomatal size and actin filament patterns. Thus, interdependent. We localized microtubules to investigate we mea ...
cell to cell interaction in the immune response v. target cells for
cell to cell interaction in the immune response v. target cells for

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Single-cell absolute contact probability detection reveals
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Transient Recombinant Protein Expression in Mammalian Cells
Transient Recombinant Protein Expression in Mammalian Cells

... Smaller plasmids are transferred to the nucleus more efficiently during transfections (Yin et al. 2005; Mairhofer and Grabherr 2008). Unnecessary parts of the vector should therefore be removed. Eukaryotic selection markers such as the neomycin phosphotransferase gene are usually not required during ...
Mechanisms of convergence and extension by cell intercalation
Mechanisms of convergence and extension by cell intercalation

... The cells of many embryonic tissues actively narrow in one dimension (convergence) and lengthen in the perpendicular dimension (extension). Convergence and extension are ubiquitous and important tissue movements in metazoan morphogenesis. In vertebrates, the dorsal axial and paraxial mesodermal tiss ...
Role of glypican 4 in the regulation of convergent extension
Role of glypican 4 in the regulation of convergent extension

... Xgly4Mo exhibited defects in the positioning and morphology of the mesoendodermal and neural tissues, although they expressed normal levels of specific marker genes (Fig. 4C; data not shown). These results further suggest that both loss- and gain-of-function of Xgly4 perturb gastrulation cell moveme ...
pdf: Xu et al. 2008
pdf: Xu et al. 2008

... the fei1 fei2 mutant. The expansion defect in fei1 fei2 roots was suppressed by inhibition of 1-aminocyclopropane-1carboxylic acid (ACC) synthase, an enzyme that converts Ado-Met to ACC in ethylene biosynthesis, but not by disruption of the ethylene response pathway. Furthermore, the FEI proteins in ...
Example of a scientific poster - SPUR
Example of a scientific poster - SPUR

... although the data suggested some difference in proportion. Based on these results, we hypothesize that the increase in cell proliferation in CagA Drosophila is dependent upon the microbiota and is incurred because of an altered intestinal bacterial community. To test this hypothesis, we measured rat ...
localization of products of atp hydrolysis in mammalian smooth
localization of products of atp hydrolysis in mammalian smooth

... present experiment was well above that observed to yield this spurious localization, but the degree of enzyme inactivation or of lead-mediated substrate hydrolysis was not ascertained by an independent chemical assay. However, the results of the four control experiments indicate that the lead salt d ...
5.4 Asexual Reproduction Binary fission is similar in function to
5.4 Asexual Reproduction Binary fission is similar in function to

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Culturability of Mycobacterium tuberculosis cells isolated from
Culturability of Mycobacterium tuberculosis cells isolated from

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Evidence for particleinduced horizontal gene transfer and serial
Evidence for particleinduced horizontal gene transfer and serial

... Incubation of the amino acid-deficient strain Escherichia coli AB1157 with particles harvested from an oligotrophic environment revealed evidence of horizontal gene transfer (HGT) with restoration of all deficiencies in revertant cells with frequencies up to 1.94  105. None of the markers were pre ...
Cryptococcus neoformans Induces Expression of Fas Ligand in Macrophages
Cryptococcus neoformans Induces Expression of Fas Ligand in Macrophages

... role in the maintenance of T cell tolerance, such as in the prevention of autoimmune disease. Fas is a type I transmembrane receptor, having a significant role in the immune system, but alternative splicing produces a soluble form, the function of which is unclear (8). Fas expression can be boosted ...
to Light and Abscisic Acid
to Light and Abscisic Acid

... to Light and Abscisic Acid’ Soon-Ok Eun and Youngsook Lee* Department of Life Science (S.-O.E., Y.L.), School of Environmental Engineering (Y.L.), Pohang University of Science and Technology, Pohang, 790-784, Korea; and lnstitute of Molecular Biology, Academia Sinica, Nankang, Taipei, Taiwan 11 529, ...
2017 Lecture PDF
2017 Lecture PDF

... to produce these proteins go through a very specific cellular pathway of organelles (secretory pathway) to reach the cell surface where they are either secreted (form part of the extracellular matrix) or are embedded in the membrane with the carbohydrate grouped on the outside surface (integral memb ...
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Cellular differentiation



In developmental biology, cellular differentiation isa cell changes from one cell type to another. Most commonly this is a less specialized type becoming a more specialized type, such as during cell growth. Differentiation occurs numerous times during the development of a multicellular organism as it changes from a simple zygote to a complex system of tissues and cell types. Differentiation continues in adulthood as adult stem cells divide and create fully differentiated daughter cells during tissue repair and during normal cell turnover. Some differentiation occurs in response to antigen exposure. Differentiation dramatically changes a cell's size, shape, membrane potential, metabolic activity, and responsiveness to signals. These changes are largely due to highly controlled modifications in gene expression and are the study of epigenetics. With a few exceptions, cellular differentiation almost never involves a change in the DNA sequence itself. Thus, different cells can have very different physical characteristics despite having the same genome.A cell that can differentiate into all cell types of the adult organism is known as pluripotent. Such cells are called embryonic stem cells in animals and meristematic cells in higher plants. A cell that can differentiate into all cell types, including the placental tissue, is known as totipotent. In mammals, only the zygote and subsequent blastomeres are totipotent, while in plants many differentiated cells can become totipotent with simple laboratory techniques. In cytopathology, the level of cellular differentiation is used as a measure of cancer progression. ""Grade"" is a marker of how differentiated a cell in a tumor is.
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