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The engrailed homeobox genes are required in multiple cell
The engrailed homeobox genes are required in multiple cell

Bio1A - Lec 6 slides File
Bio1A - Lec 6 slides File

... • built as a twisted double chain of actin subunits • structural role - to bear tension, resisting pulling forces within the cell ...
Biology - trinity
Biology - trinity

... Trinity Area School District Template for Curriculum Mapping, 2012-2013 Course: Biology 9 Grade: 9th Designer(s): Monteleone/Helmkamp/ Watkins ...
Bacterial toxins modifying the actin cytoskeleton
Bacterial toxins modifying the actin cytoskeleton

... identity and immunological cross reactions between the two toxins) and a hemorrhagic toxin (HT). C. novyi is an etiological agent of gangrene with major edema. The main toxin produced is the alpha toxin. The large clostridial toxins have a common structure (Fig. 1). The C-terminal part, about 25–30% ...
Two Light-dependent Conductances in Lima Rhabdomeric
Two Light-dependent Conductances in Lima Rhabdomeric

... The amplitude and the time course of the photocurrent were examined as a function of the intensity of stimulating light. Fig. 2, A and B, shows typical light intensity series for two different cells. At low light levels the response to a 100°ms flash is quite slow, with latency on the order of 300 m ...
The connection of cytoskeletal network with plasma membrane and
The connection of cytoskeletal network with plasma membrane and

... microtubules and the plasma membrane. However, tubulin subunits are commonly detected in immunoprecipitation assays, and additional microtubule localizations of PLDs in plants have not been reported. Treatment with 1-butanol of Arabidopsis roots (Motes et al. 2005) and membrane ghosts (Hirase et al. ...
Implications for Cancer Biology
Implications for Cancer Biology

... develop drugs targeting parallel pathways that converge on common critical effectors. This principle is becoming evident from studies of the regulation of cell growth (size), which is under the control of both extracellular signals, such as growth factors, and less-understood intracellular signals, ...
a brief history Agrobacterium tumefaciens
a brief history Agrobacterium tumefaciens

... recent times. Galls on plants were described by Malpighi (1679) who believed that these extraordinary growth are spontaneously produced. Agrobacterium was first isolated from tumors in 1897 by Fridiano Cavara in Napoli, Italy. After this bacterium was recognized to be the cause of crown gall disease ...
Association between border cell responses and localized root
Association between border cell responses and localized root

... Phenolic compounds extracted from root tissues were also tested on A. euteiches development corresponding to a concentration of 1.2 + 0.5 mg mL21 of pisatin. Mycelial growth and the number of oospores produced were assayed for each condition according to Sauvage et al. (2007). Ultrastructural analys ...
Thesis - KI Open Archive
Thesis - KI Open Archive

... macrophages is enabled through distinctly regulated mechanisms involving both host and bacterial factors. S. pyogenes used to be considered as an extracellular pathogen, however, it is becoming increasingly apparent that it is important to consider also an intracellular source; thus affecting choice ...
pdf, 1.1 MB - The Nebenführ Lab
pdf, 1.1 MB - The Nebenführ Lab

... persists until completion of cytokinesis. Maintenance of the distinct localizations does not depend on intact actin filaments or microtubules, although the mitotic spindle appears to play a major role in organizing the organelle distribution patterns. The redistribution of Golgi stacks during mitosi ...
Effect of membrane composition on temperature activation of TRPV1
Effect of membrane composition on temperature activation of TRPV1

... 2.1 Electrical properties of the cell membrane All living cells are enveloped by a plasma membrane that acts as a barrier between the intracellular and the extracellular environment [1]. The main constituents of cell membranes are phospholipids, which contain both hydrophobic and hydrophilic (polari ...
dravhandling-hafte - DUO
dravhandling-hafte - DUO

... kidney cortex and provides an excellent model system to study epithelial cell polarity. In fact, it is the most commonly studied epithelial cell line which, when grown on permeable supports, forms well polarized monolayers that can be accessed from both the apical and basolateral surfaces (Zegers an ...
Pontin and Reptin regulate cell proliferation in early Xenopus
Pontin and Reptin regulate cell proliferation in early Xenopus

... remodelling and transcription. They interact with many different proteins including TATA box binding protein (TBP), b-catenin and c-Myc and thus, potentially modulate different pathways. As antagonistic regulators of Wnt-signalling, they control wing development in Drosophila and heart growth in zeb ...
Limitations of Allotopic Expression of Mitochondrial Genes in
Limitations of Allotopic Expression of Mitochondrial Genes in

... The possibility of expressing mitochondrial DNA-coded genes in the nuclear-cytoplasmic compartment provides an attractive system for genetic treatment of mitochondrial disorders associated with mitochondrial DNA mutations. In theory, by recoding mitochondrial genes to adapt them to the universal gen ...
Cytokinesis defines a spatial landmark for hepatocyte polarization
Cytokinesis defines a spatial landmark for hepatocyte polarization

... Although other aspects of hepatocyte polarization, such as membrane trafficking and bile canaliculus formation, have been studied extensively in primary hepatocytes and various cell lines (Tuma et al., 1999; Tuma et al., 2001; Wakabayashi et al., 2005; Wang and Boyer, 2004; Zegers and Hoekstra, 1998 ...
Mutations affecting the cytoskeletal organization
Mutations affecting the cytoskeletal organization

... The generation of order and asymmetry at the cytoplasmic level is fundamental to many basic cellular functions including mitosis, directed cell movement, and developmental processes such as axis specification. All of these events are largely dependent on the cytoskeleton, which is responsible for or ...
Retraction Notice - Scientific Research Publishing
Retraction Notice - Scientific Research Publishing

... Growth and morphogenesis of plant cells and tissues in vitro are largely depends on composition of culture medium. The composition of culture medium, preferable to a certain plant species, is nearly the main task for the establishment of a successful plant cell and tissue culture technique. The unde ...
Nephridia
Nephridia

... (i) Micro and Meganephridia. On the basis of their size and number, nephridia may be micronephridia or meganephridia. Micronephridia or meronephridia or smaller in size and are numerous in each segment (Pheretima). Meganephridia or holonephridia are larger in size and generally or pair per segment. ...
Translational Research on Breast Cancer: miRNA, siRNA and
Translational Research on Breast Cancer: miRNA, siRNA and

... that miR-451 enhanced the differentiation of erythroid cells (Rathjen et al., 2006). The miRNAs, which are secreted to the blood stream, can be detected and used as diagnostic markers, one such example is miR-21 released to the blood stream. It has shown by various investigators that several of thes ...
Molecular Characterization of Calymmin, a Novel Notochord Sheath
Molecular Characterization of Calymmin, a Novel Notochord Sheath

... specifically expressed by the vacuolated notochord cells. D,E: Pharyngula period (24 hours postfertilization [hpf]). In D, the expression of c29-77 cDNA in the notochord shows a gradient with a higher level of transcripts toward the cells located in the tail region. E shows specific expression in th ...
On the so-called "Sexual" Method of Spore
On the so-called "Sexual" Method of Spore

... also known to occur in some filamentous Algae—in S p h a e r o zosina and S p o n d y l o s i u m (Desmidiaceas), 1 and in S p i r o g y r a , Z y g n e m a , aud other ConjugatEe. A comparable process has also been described in the Metazoa—in the parthenogenetic egg of A r t e m i a . 2 Now it appe ...
How and why does β-actin mRNA target?
How and why does β-actin mRNA target?

... of lamellipods of crawling cells (Hill and Gunning, 1993; Sundell and Singer, 1990). Furthermore, the localization of β-actin mRNA is correlated with the localization of β-actin protein to apical structures such as filaments in microvilli of epithelia and auditory hair cells (Hofer et al., 1997), an ...
University of Groningen Bacillus subtilis at near
University of Groningen Bacillus subtilis at near

... more than 40 days, there are many risks of failure that render a retentostat cultivation useless for further analysis. A number of adaptations to the retentostat setup, such as the installment of a dropper unit to prevent B. subtilis cells from growing in the medium feed-line, were required for prol ...
Actin microfilaments in fungi
Actin microfilaments in fungi

... After nuclei have divided, the processes of cytokinesis and septation give rise to daughter cells in yeast and to partitions in hyphae. These processes are accomplished by a septal band that contracts inwards as septal wall material is deposited. The band contains F-actin and the ABPs formin (which ...
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Amitosis

Amitosis (a- + mitosis) is absence of mitosis, the usual form of cell division in the cells of eukaryotes. There are several senses in which eukaryotic cells can be amitotic. One refers to capability for non-mitotic division and the other refers to lack of capability for division. In one sense of the word, which is now mostly obsolete, amitosis is cell division in eukaryotic cells that happens without the usual features of mitosis as seen on microscopy, namely, without nuclear envelope breakdown and without formation of mitotic spindle and condensed chromosomes as far as microscopy can detect. However, most examples of cell division formerly thought to belong to this supposedly ""non-mitotic"" class, such as the division of unicellular eukaryotes, are today recognized as belonging to a class of mitosis called closed mitosis. A spectrum of mitotic activity can be categorized as open, semi-closed, and closed mitosis, depending on the fate of the nuclear envelope. An exception is the division of ciliate macronucleus, which is not mitotic, and the reference to this process as amitosis may be the only legitimate use of the ""non-mitotic division"" sense of the term today. In animals and plants which normally have open mitosis, the microscopic picture described in the 19th century as amitosis most likely corresponded to apoptosis, a process of programmed cell death associated with fragmentation of the nucleus and cytoplasm. Relatedly, even in the late 19th century cytologists mentioned that in larger life forms, amitosis is a ""forerunner of degeneration"".Another sense of amitotic refers to cells of certain tissues that are usually no longer capable of mitosis once the organism has matured into adulthood. In humans this is true of various muscle and nerve tissue types; if the existing ones are damaged, they cannot be replaced with new ones of equal capability. For example, cardiac muscle destroyed by heart attack and nerves destroyed by piercing trauma usually cannot regenerate. In contrast, skin cells are capable of mitosis throughout adulthood; old skin cells that die and slough off are replaced with new ones. Human liver tissue also has a sort of dormant regenerative ability; it is usually not needed or expressed but can be elicited if needed.
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