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RNAi Screening Identifies the Armadillo Repeat
RNAi Screening Identifies the Armadillo Repeat

... nucleus is not randomly positioned in a cell (Gundersen and Worman 2013). For example, cells of rod-shaped fission yeast keep the nucleus at the center of the cell, and consequently form the mitotic spindle and the cytokinetic contractile ring at the cell center; these mechanisms ensure symmetrical ...
The co-ordination of cell division, differentiation and morphogenesis
The co-ordination of cell division, differentiation and morphogenesis

... morphogenesis will not occur. Moreover, in addition to this basic requirement for cell proliferation if multicellularbased morphogenesis is to occur, the tight but variable relationship between cell growth and proliferation can lead to rather complex and, indeed, non-intuitive linkages between cell ...
Transforming Growth Factor-Яs and Vascular Disorders
Transforming Growth Factor-Яs and Vascular Disorders

... type I and II receptor complexes activating Smad-dependent and Smad-independent signals, which regulate proliferation, differentiation, and survival. They are potent regulators of vascular development and vessel remodeling and play key roles in atherosclerosis and restenosis, regulating endothelial, ...
The morphologies of breast cancer cell lines in three
The morphologies of breast cancer cell lines in three

... Twenty-five established epithelial cell lines originally derived from reduction mammoplasty or breast tumors were cultured in a 3D culture assay in which cells are seeded singly on top of a thin gel comprised of laminin-rich extracellular matrix (Lee et al., 2007; Park et al., 2006), overlaid with m ...
Bacterial Cell Morphogenesis Does Not Require a Preexisting
Bacterial Cell Morphogenesis Does Not Require a Preexisting

... colonies appeared (Figure 4B, right). These colonies contained many walled cells with typical rod-shape morphology (Figure 4Dii). The colony-purified strain was able to grow with normal rod shape on NA plates (without osmoprotectants) in the presence of IPTG (and xylose, for the expression of cdsA) ...
Recent developments in atomic force microscopy for underwater
Recent developments in atomic force microscopy for underwater

... modulus. Although the net orientation of cellulose microfibrils vary gradually from the dispersed arrangement in the inner scales to the transverse orientation in the outer scales as shown in our previous study[15], the nanoindentation moduli of cell walls do not show substantial change that can be ...
Life under pressure: hydrostatic pressure in cell growth and function
Life under pressure: hydrostatic pressure in cell growth and function

... earliest protocells, and these formed the basis of volume regulation during the development of cellular complexity [1]. The list of processes that are controlled by cell volume and hydrodynamics reads like the book of life itself – it includes growth and proliferation, membrane transport, exocytosis ...
Travel Brochure of a Cell
Travel Brochure of a Cell

... Travel Brochure of a Cell Create a travel brochure that describes an animal or plant cell as if it were a museum or amusement park. Your brochure must attract visitors to spend money to visit a plant or animal cell. You can think of it as a huge amusement park or a small roadside attraction. Your at ...
Inflating bacterial cells by increased protein synthesis
Inflating bacterial cells by increased protein synthesis

... Appendix Fig S4). Assuming that this puts chromosome replication in the nucleotide-limited regime, then the rate of nucleotide synthesis, k  〈D〉 where 〈D〉 denotes the average amount of DNA per cell, is proportional to the cellular abundance of enzymes of the nucleotide production pathways, /nuc  〈 ...
Cell cycle and differentiation
Cell cycle and differentiation

... for example, more meristemoid cells are formed in 35S:CDT1 plants than in wildtype plants. (b) Developmental signals control further cell-cycle progression; for example, trichomes start to endoreplicate after being specified. (c) Cell cycle and differentiation can progress independently of each othe ...
File
File

... What organelles help make and transport proteins? Proteins are assembled on ribosomes. Proteins made on the rough endoplasmic reticulum include those that will be released, or secreted, from the cell as well as many membrane proteins and proteins destined for lysosomes and other specialized location ...
Stomatal development: cross talk puts mouths in place
Stomatal development: cross talk puts mouths in place

... Stomata are crucial for the productivity and survival of land plants. Until recently, little was known about the events and molecular pathways required for stomatal development. Emerging data indicate that cell– cell signaling conveys spatial information about cell identity and location. Such inform ...
BCL-xL-Dependent Light Scattering by Apoptotic Cells
BCL-xL-Dependent Light Scattering by Apoptotic Cells

... during apoptosis and after overexpression of the mitochondria-bound antiapoptotic protein BCL-xL. OSIR is sensitive to particle size/shape for objects with wavelength-scale dimensions, and was used as a morphometric measure of cellular response. Three cell variants were treated with staurosporine (S ...
Full Text - Harvard University
Full Text - Harvard University

... across vascular plants. The extent to which water transport in xylem cells can be modified in response to changes in the ionic content of xylem sap also is shown to vary in correlation with variation in lignification patterns, consistent with the proposed mechanism for hydraulic response through siz ...
Ultrastructure of cell types of the olfactory epithelium in a catfish
Ultrastructure of cell types of the olfactory epithelium in a catfish

... some thick protrusions combining with the cilia in the sensory epithelium of Belone belone. These protrusions simulate rod cell and they (op. cit.) considered this cell as a degenerated one. But the present study puts a question to its degenerated status because it has been observed that the rod cel ...
7 The Nervous System ESSENTIALS OF HUMAN
7 The Nervous System ESSENTIALS OF HUMAN

... like fashion on axons outside the CNS ...
Author Guidelines for 8
Author Guidelines for 8

... Cell velocity analysis from in vitro flow chamber assays and in vivo video microscopy is a crucial task in important biomedical application areas [3, 4]. Computing cell velocities from video microscopy manually is an extremely tedious task, which is also prone to human fatigue and bias. The essentia ...
Cell cycle`s deregulation and cardiovascular diseases
Cell cycle`s deregulation and cardiovascular diseases

... • The cell cycle is the series of events which take place in the cell and lead to its duplication by means of replication and duplication of its previous contents. ...
It is essential for students to know the three major tenets of the cell
It is essential for students to know the three major tenets of the cell

... the human body, including cells, tissues, organs, systems (7-3.1), and explained how cellular processes (including respiration, photosynthesis in plants, mitosis, and waste elimination) are essential to the survival of the organism (7-2.4). It is essential for students to understand  In the develop ...
Genes involved in xylem secondary cell wall formation
Genes involved in xylem secondary cell wall formation

... xylem tissues is strongly dependent on the structure, composition, and morphology of the secondary cell wall. Thus, there has been a growing understanding of not only the biological importance of the secondary cell wall, particularly regarding xylem differentiation, but also in terms of economic sig ...
Standard B-2
Standard B-2

... explained how cellular processes (including respiration and waste elimination) are essential to the survival of the organism (7-2.4). The dynamics of homeostasis and active or passive transport of substances is new material in this course. It is essential for students to understand that homeostasis ...
Form equals function? Bacterial shape and its consequences for
Form equals function? Bacterial shape and its consequences for

... exhibited significant defects in in vivo models of colonization. However, both mutants had normal motility when assayed on soft agar plates. At first glance, these observations appear to throw into question the role of shape in colonization. There are two possible explanations. First, it is not clea ...
Aurintricarboxylic Acid Rescues PC12 Cells and Sympathetic
Aurintricarboxylic Acid Rescues PC12 Cells and Sympathetic

... PC12 cell soluble DNA was extracted by the method of Hockenbery et al . (1990) . The nucleic acid concentration was determined by UV absorbance at 260 run . The same amount of nucleic acid from each sample (10-30 kg, depending on the experiment) was subjected to electrophoresis on a 1 .2 % agarose g ...
Plant-specific mitotic targeting of RanGAP
Plant-specific mitotic targeting of RanGAP

... extension, establishment of the Ran gradient) will be crucial to understand the degree of divergence between the two kingdoms. Here we show that the human and Arabidopsis RanGAP targeting domains are kingdom-specific. Unlike animal RanGAP, Arabidopsis RanGAP1 appears at the emerging cell plate in di ...
PDF
PDF

... showed the experimentally observed polygon distribution. Part of this region also reproduced quantitative responses of the wing disc to perturbations by laser ablation, as well as the positive correlation between average cell area and polygon number that they observed experimentally. The simulation ...
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Programmed cell death



Programmed cell-death (or PCD) is death of a cell in any form, mediated by an intracellular program. PCD is carried out in a regulated process, which usually confers advantage during an organism's life-cycle. For example, the differentiation of fingers and toes in a developing human embryo occurs because cells between the fingers apoptose; the result is that the digits are separate. PCD serves fundamental functions during both plant and metazoa (multicellular animals) tissue development.Apoptosis and autophagy are both forms of programmed cell death, but necrosis is a non-physiological process that occurs as a result of infection or injury.Necrosis is the death of a cell caused by external factors such as trauma or infection and occurs in several different forms. Recently a form of programmed necrosis, called necroptosis, has been recognized as an alternate form of programmed cell death. It is hypothesized that necroptosis can serve as a cell-death backup to apoptosis when the apoptosis signaling is blocked by endogenous or exogenous factors such as viruses or mutations.
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