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The role of the cytoskeleton in the polarized growth of
The role of the cytoskeleton in the polarized growth of

... to the medium, at the given final concentrations, at the beginning of culture or after 45 rnin of culture in GI medium. In the experiment designed to examine the effects of treatment with CA and benomyl together, one drug was added to cells that had been cultured in GI medium for 45 min and the othe ...
Sodium in plants: perception, signalling, and
Sodium in plants: perception, signalling, and

... Even substrates with salinity levels that approach seawater are stimulatory showing that, in contrast to glycophytes, halophytes also benefit from Na+ at high concentrations. At low levels, Na+ not only is harmless but can be very useful, particularly in low K+ conditions. This is because, in hydrat ...
Biology
Biology

... (1635–1703), one of the first scientists to use a microscope to examine pond water, cork and other things, was the first to refer to the cavities he saw in cork as ‘cells’, Latin for chambers. Subsequent scientists developed Hooke’s discovery of the cell into the Cell Theory on which modern Biology ...
F-Actin-Dependent Endocytosis of Cell Wall
F-Actin-Dependent Endocytosis of Cell Wall

... strongly suggest that there must be an additional membranous source that feeds into these compartments of plant cells. Our data suggest that this source is the PM. The nature of BFA compartments remains controversial also because several other studies failed to report such compartments, even in plan ...
Prokaryotic Cells
Prokaryotic Cells

... • There are two subunits: a small one (30S), and a bigger one (50S). When a ribosome needs to be formed for translation, the subunits attach to each other and form a 70S unit. The "S" is a measure of the rate of sedimentation in centrifugation, rather than a measure of weight. That's why those two s ...
respiratory and circulatory system ppt
respiratory and circulatory system ppt

... •Collects fluid lost from the blood and return it back to the circulatory system – Consists of a network of vessels, nodes and organs. • Lymph vessels – contain valves to prevents backflow • Spleen – main function is to destroy damaged red blood cells and platelets • Thymus – certain WBC’s mature he ...
PDF
PDF

... luciferase activity (Fig. 1A). Starting with E16.0 embryos, a lowintensity signal was detected in the posterior subcutaneous and intrascapular regions, both of which are known to become the first sites of adipogenesis at later stages of murine development in vivo (Fig. 1A). We used this anatomical i ...
Chapter 2.3 Active Cell Processes: Motility, Muscle, and Mechanotransduction
Chapter 2.3 Active Cell Processes: Motility, Muscle, and Mechanotransduction

... qualitative, and the models, to the extent they exist, more ad hoc. This is because not only are the processes much more complex, often involving a cascade of reactions or numerous individual cell functions, but they are also less well understood. We begin this chapter with a discussion of the vario ...
The Development of the Cnidoblasts of Hydra
The Development of the Cnidoblasts of Hydra

... in regeneration of a whole organism from a small fragment (2). The possibility that these cells may be pluripotent is not contested here, but under the conditions of the present study it was not evident that they have the capacity to differentiate into any cell type other than cnidoblasts. Our inter ...
take homes FINAL embryo 2012
take homes FINAL embryo 2012

...  Nuclear membranes of sperm and oocyte dissolve and homologous chromosomes align (completion of fertilization)  DNA is duplicated and zygote begins to undergo mitosis  If fertilization does not occur, corpus luteum degenerates and the functional (compact and spongy) layer of the endometrium of th ...
Know More about Christmas
Know More about Christmas

... Photovoltaic effect: When photons are absorbed by photo-sensitizer, a voltage difference across a junction is produced. The voltage difference is caused by the internal drift of electrons which accepted the light energy and leaved the normal position. Photoelectric effect: If the electrons are l ...
Fig. - Journal of Cell Science
Fig. - Journal of Cell Science

... during cell division may have been important in the evolution of eukaryotic cell differentiation. One of the major challenges to studying complex spatiotemporal changes through the cell division cycle has been in visualizing organelles and cellular structures in a three-dimensional (3D) context. Con ...
chapter 3: the integumentary system
chapter 3: the integumentary system

... Besides the capillaries in the dermis, the other blood vessels of great importance are the arterioles. Arterioles are small arteries, and the smooth muscle in their walls permits them to constrict (close) or dilate (open). This is important in the maintenance of body temperature, because blood carri ...
Coupling cellular oscillators—circadian and cell division cycles in cyanobacteria Bernardo F Pando
Coupling cellular oscillators—circadian and cell division cycles in cyanobacteria Bernardo F Pando

... understand and predict the dynamical state of cells. From a systems point of view one could abstract the dynamics of simple oscillators using phase variables [1,2]. These variables quantify which part of the cycle the system is going through and interactions with other systems (oscillatory or not) c ...
Diefenbach, A., and D.H. Raulet. 2002. The innate immune response to tumors and its role in the induction of T cell immunity. Immunological Reviews 188:9-21. 
Diefenbach, A., and D.H. Raulet. 2002. The innate immune response to tumors and its role in the induction of T cell immunity. Immunological Reviews 188:9-21. 

... KIR (in humans, but not mice) (43–46) and the CD94/ NKG2A receptor (in both mice and humans) (47–50). Ly49 and CD94/NKG2A receptors are related to C-type lectins in structure, while KIR are immunoglobulin (Ig)-superfamily members. Ly49 and KIR bind directly to intact classical class I molecules. CD9 ...
a-detailed-study-of
a-detailed-study-of

... Apoptosis is an evolutionarily conserved, highly regulated process of programmed, active, cell death, morphologically and biochemically different from necrosis, and is important in normal development and physiological homeostasis of multicellular organisms [1, 2 and 3]. Cells dying by apoptosis main ...
Print
Print

... postulated membrane potential-regulated proton flux, and Hastings (4) illustrated this mechanism explicitly as a cartoon proton channel in 1978. Bioluminescent marine creatures like Noctiluca emit light when stimulated, producing nocturnal luminescence (5). This light is emitted from numerous small ...
Final Draft
Final Draft

... Jellyfish are efficient predators which prey on crabs, fish larvae, and small fish. Their venoms consist of various toxins including neurotoxins that paralyse prey organisms immediately. One possible mode of action of neurotoxins is the blockage of voltage-gated sodium (Nav) channels. A novel polype ...
Churchlands Senior High School – Science Department
Churchlands Senior High School – Science Department

... • Use internet/DVD program to illustrate the types of cellular structures involved in metabolic reactions. ...
10. Early Amphibian Development
10. Early Amphibian Development

... 1) Anterior­posterior, dorsal­ventral, and left­right axes are specified  by events triggered at fertilization and realized during gastrulation.  2) Mesoderm is determined by transcription factors and  paracrine factors from the vegetal region.  3) Of all tissues in the Xenopus pre­gastrula, only th ...
Neutrophil Chemotaxis In Vitro and In Vivo Glycoprotein G (gG
Neutrophil Chemotaxis In Vitro and In Vivo Glycoprotein G (gG

... significantly inhibited IL-8-induced chemotaxis of equine neutrophils. Identification of gG as the responsible vCKBP was achieved by repeating similar experiments with supernatants from cells infected with a gG-negative mutant, which were unable to alter IL-8-induced equine neutrophil migration. Fur ...
Cardiac muscle File
Cardiac muscle File

... right ventricular cardiomyopathy). Under light microscopy, intercalated discs appear as thin, typically dark-staining lines dividing adjacent cardiac muscle cells. The intercalated discs run perpendicular to the direction of muscle fibers. Under electron microscopy, an intercalated disc's path appea ...
Interplay between cell growth and cell cycle in
Interplay between cell growth and cell cycle in

... Roeder, 2012). Here are reviewed the interactions between these processes, how these connections are modulated during plant development, and how they relate to the genetic control of plant growth. Where appropriate, plant processes will be discussed in the wider context of cell cycle and growth regu ...
Exine dehiscing induces rape microspore polarity
Exine dehiscing induces rape microspore polarity

... accessible model plants, such as mosses and algae, indicated that polarity could be influenced by environmental factors, such as light and gravity, and these studies suggested important roles for ion fluxes, plasma membrane, and cytoskeleton in the establishment and maintenance of cell polarity (Sch ...
Comparative Analysis of Short- and long-Term
Comparative Analysis of Short- and long-Term

... gradual imposition may not lead to significant cellular injuries and may enable plants to tolerate an even more intense stress. Therefore, appropriate and accurate investigations have to be designed to distinguish polypeptides whose synthesis is associated with the ability of plants to cope with wat ...
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Organ-on-a-chip

An organ-on-a-chip (OC) is a multi-channel 3-D microfluidic cell culture chip that simulates the activities, mechanics and physiological response of entire organs and organ systems. It constitutes the subject matter of significant biomedical engineering research, more precisely in bio-MEMS. The convergence of labs-on-chips (LOCs) and cell biology has permitted the study of human physiology in an organ-specific context, introducing a novel model of in vitro multicellular human organisms. One day, they will perhaps abolish the need for animals in drug development and toxin testing.Although multiple publications claim to have translated organ functions onto this interface, the movement towards this microfluidic application is still in its infancy. Organs-on-chips will vary in design and approach between different researchers. As such, validation and optimization of these systems will likely be a long process. Organs that have been simulated by microfluidic devices include the heart, the lung, kidney, artery, bone, cartilage, skin and more.Nevertheless, building valid artificial organs requires not only a precise cellular manipulation, but a detailed understanding of the human body’s fundamental intricate response to any event. A common concern with organs-on-chips lies in the isolation of organs during testing. ""If you don’t use as close to the total physiological system that you can, you’re likely to run into troubles"" says William Haseltine, founder of Rockville, Maryland. Microfabrication, microelectronics and microfluidics offer the prospect of modeling sophisticated in vitro physiological responses under accurately simulated conditions.
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