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Factor-1-Deficient Mice IL-15-Deficient and IFN Regulatory 3 Cells
Factor-1-Deficient Mice IL-15-Deficient and IFN Regulatory 3 Cells

... NK cells, NK-T cells, and distinct intestinal intraepithelial lymphocyte populations (11, 12). In addition, these studies have revealed a role for IL-15 in the maintenance of the memory CD8⫹ T cell population in the periphery (11). The finding that IL-15⫺/⫺ and IL-15R␣⫺/⫺ mice are lymphopenic sugges ...
DNA Polymerase Regulates Cisplatin
DNA Polymerase Regulates Cisplatin

... platinated by treatment with cisplatin before transfection. By comparing luciferase expression in the uninjured 9N58 and 6I cells it is possible to assess what fraction of host cell luciferase expression is due to specifically polymerase ␨-mediated adduct bypass as opposed to translesional synthesis ...
From segment to somite: Segmentation to
From segment to somite: Segmentation to

... set the time at which cells undergo a catastrophe (Cooke and Zeeman, 1976; Zeeman, 1974). This represents a rapid change of state, such as the changes in adhesive and migratory behavior of PSM cells as they form somites. Support for the existence of a segmentation clock came from the discovery that ...
File - THE ISLAM SHOW
File - THE ISLAM SHOW

... speech and hearing and with a remarkably complex physical structure could come into existence from a drop of fluid. This development was certainly not the result of a random process or the operation of chance. The stages of human formation have all come about through God’s unique creation. This book ...
The Mormyromast Region of the Mormyrid Electrosensory Lobe. I
The Mormyromast Region of the Mormyrid Electrosensory Lobe. I

... Submitted 6 March 2003; accepted in final form 21 April 2003 ...
central spindle and contractile ring for cytokinesis encodes a kinesin
central spindle and contractile ring for cytokinesis encodes a kinesin

... cleavage furrow when the spindle is moved close to the cell cortex (Kawamura 1977). In addition to the contribution made by the spindle, several proteins, known as the chromosomal passenger proteins, dissociate from chromosomes at the metaphase–anaphase transition to be deposited at the cell equator ...
Pathway in Gliomas Cannabinoids Inhibit the Vascular Endothelial
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... the formation of blood vessels. Vascular endothelial growth factor (VEGF; also known as VEGF-A) is considered the most important proangiogenic molecule because it is expressed abundantly by a wide variety of animal and human tumors and because of its potency, selectivity, and ability to regulate mos ...
Activity 1 - how does the immune system work
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... In other words, mature T-cells are the ultimate arbiters of what antigens are ‘self’, and mature T-cells should only attack foreign proteins – such as those made by pathogens. Here are two articles about the elegant process of thymic ‘education’. (Be aware when you read around this topic on the inte ...
ATM and - Cancer Research
ATM and - Cancer Research

... ␥-H2AX formation, demonstrating that this event is ATR dependent (14). LY294002 did not impair UV-induced H2AX phosphorylation in 1BR3 cells, demonstrating that ATR remains active in the presence of the drug (data not shown). To verify that LY294002 does not impair ATM function, we examined the impa ...
Stable benefit of embryonic stem cell therapy in - AJP
Stable benefit of embryonic stem cell therapy in - AJP

... Cardiogenic potential of embryonic stem cells and delivery into infarcted heart. The CGR8 embryonic stem cell colony demonstrated typical features of undifferentiated cells, including a high nucleus-to-cytosol ratio, prominent nucleoli, and mitochondria with few cristae (Fig. 1, A and B). The cardio ...
Organization of the Sea Urchin Egg Endoplasmic Reticulum and Its
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... results in a rearrangement of the subcortical ER near the animal pole (Campanella et al., 1988) . Using the DiI-oil drop injection technique, we have now made continuous observations of the rearrangements of the ER in the living sea urchin egg during fertilization . We find that within the first 20 ...
Cryoelectron Tomography: Implications for Actin Cytoskeleton
Cryoelectron Tomography: Implications for Actin Cytoskeleton

... with the reduced electron illumination, the resulting projections become increasingly noisy, thereby degrading resolution. The total maximal tolerable dose for vitrified specimens maintained at liquid-nitrogen temperature is near 5000 e– / nm2, which in the end limits the resolution under these cond ...
Fission yeast Tor2 promotes cell growth and represses cell
Fission yeast Tor2 promotes cell growth and represses cell

... (Alvarez et al., 2006; Daga et al., 2003) also led to increased levels of rum1+ or ste9+ mRNAs (Fig. S1, supplementary material). The level of ste11+ mRNA also increased after incubation of the tor2-51 mutant at the restrictive temperature but the increase in this message appeared at 8 hours, somewh ...
the Adult Drosophila Fat Body
the Adult Drosophila Fat Body

441_2009_904_MOESM1_ESM - Springer Static Content Server
441_2009_904_MOESM1_ESM - Springer Static Content Server

... Identification of immunohistochemical fingerprints (IFs). IFs were established in two morphologically distinct populations of cells. The first population included cells without thick dendritic tuft (PG- and SA-like cells), the second population included cells with a thick dendritic tuft (ET-like cel ...
Vesicle Trafficking during Somatic Cytokinesis
Vesicle Trafficking during Somatic Cytokinesis

... secretory route (Preuss et al., 2004), although it needs to be shown whether this occurs during cytokinesis. In the ConA-treated binucleated Arabidopsis root tip cells, fragmented cell plate-like structures and unfused membrane vesicles, resembling the vesicles that accumulate in the kn mutant, coul ...
Hormonal control of cell division and elongation
Hormonal control of cell division and elongation

... more proximal cortical and epidermis cells. The newly formed lateral auxin response maximum leads to ectopic QC and columella specification, indicating that auxin plays a crucial role in stem cell specification in roots (Fig. 1; Sabatini et al., 1999). RETINOBLASTOMA-RELATED protein (RBR) is the pla ...
Article Full Text  - Aerosol and Air Quality Research
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... is an easy and convenient approach and suitable for routine measurements because of its low cost and high time resolution. The disadvantage of this approach is that only culturable bacteria can be detected and investigated with the colony-forming unit on the culture media rather than the abundance o ...
Cytotoxicity and inhibition of platelet aggregation
Cytotoxicity and inhibition of platelet aggregation

... reported to exert a multiplicity of effects on biological organisms including the induction or inhibition of platelet aggregation [4–6]. These enzymes also exhibit antibacterial and antiviral properties, abolishing the growth of both Gram-positive and -negative prokaryotes as well as HIV [7–9]. Furt ...
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... fluid derangements in newborn shock have been well characterized by our laboratory using a canine model (2 1). Furthermore, the ready availability of the dog led us to continue our study of shock-related changes in cellular function in this model. In our present study, newborn shock altered cell vol ...
The Chemical Senses and Transduction
The Chemical Senses and Transduction

... that represent this information, and converting the physical energy into a form that can be acted upon and utilized by the nervous system. The process through which a specific pattern of information (energy) in the environment (e.g., light, vibrations, dissolved chemicals or airborne chemicals) is c ...
Enzymology of Plasma Membranes of Insect Intestinal Cells`
Enzymology of Plasma Membranes of Insect Intestinal Cells`

... as a means of locating pertinent work published more than five years ago. Since this review is concerned with plasma membrane bound enzymes of insect intestinal cells I have omitted many excellent studies of enzymes found in the lumen of insect digestive tracts as well as those concerned with enzyme ...
Gene Section CDH1 (cadherin 1, type 1, E-cadherin (epithelial))
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... are well known to play important roles in cell recognition and cell sorting during development. However, they continue to be expressed at high levels in virtually all solid tissues. There are many members of the classic cadherin family (which is a subset of the larger cadherin superfamily), but E-ca ...
Mouse models of graft-versus-host disease: advances and limitations
Mouse models of graft-versus-host disease: advances and limitations

... 2009). Surprisingly, however, some studies have reported that their absence from the graft can also worsen GvHD (Yi et al., 2008; Carlson et al., 2009; Kappel et al., 2009). It is hoped that future studies will resolve this discrepancy to clarify the role of Th17 cells in GvHD pathology. A crucial c ...
Unit 3 Biology Webquest/Book quest - Mandarin High School
Unit 3 Biology Webquest/Book quest - Mandarin High School

... mitochondria due to high energy requirements. Think about the body functions that require the most energy to function, like studying which brain cells. List the activities your body performs daily and connect the activities to the tissue/cells that carry out these functions. Putting this in a table ...
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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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