MHC
... At the cell surface, such a binding site would be unable to • allow a high enough binding affinity to form a trimolecular complex with the T cell antigen receptor • prevent exchange of the peptide with others in the extracellular milieu ...
... At the cell surface, such a binding site would be unable to • allow a high enough binding affinity to form a trimolecular complex with the T cell antigen receptor • prevent exchange of the peptide with others in the extracellular milieu ...
as a PDF
... not clear yet how the signal is transmitted from the spindle pole body to the bud neck and especially which role Kin4 plays at this place. If cytokinesis is not followed by cell separation, the result will be a tissue or, as in the case of filamentous fungi, a septated hypha. As a difference to animal ...
... not clear yet how the signal is transmitted from the spindle pole body to the bud neck and especially which role Kin4 plays at this place. If cytokinesis is not followed by cell separation, the result will be a tissue or, as in the case of filamentous fungi, a septated hypha. As a difference to animal ...
Chapter 20 - Antineoplatic Drugs - Delmar
... cycle and also inhibits T- and B-lymphocytes; used mainly in dogs for immune-mediated disease – Cyclophosphamide interferes with DNA and RNA replication, disrupting nucleic acid function; has been used for immune-mediated diseases ...
... cycle and also inhibits T- and B-lymphocytes; used mainly in dogs for immune-mediated disease – Cyclophosphamide interferes with DNA and RNA replication, disrupting nucleic acid function; has been used for immune-mediated diseases ...
cytochemical localization of acid phosphatases in euglena gracilis
... of about four fibrils and near a characteristic vesicle of the endoplasmic reticulum. In the cytostome, where fission begins during division, there is an alternation of large and small pcllicle complexes, both of which have induced phosphatase activity. A similar alternation is seen over the entire ...
... of about four fibrils and near a characteristic vesicle of the endoplasmic reticulum. In the cytostome, where fission begins during division, there is an alternation of large and small pcllicle complexes, both of which have induced phosphatase activity. A similar alternation is seen over the entire ...
Introducing Plant Cell Culture
... In the future, advances in plant cell culture technology will enable commercial processing of even rarer plants and the actives they provide. DianaPlantSciences is at present the only company focused on producing nutritional ingredients from plant cell culture technology. It develops, manufactures a ...
... In the future, advances in plant cell culture technology will enable commercial processing of even rarer plants and the actives they provide. DianaPlantSciences is at present the only company focused on producing nutritional ingredients from plant cell culture technology. It develops, manufactures a ...
lysosomes
... • Occlusion of blood vessels decreases blood flow to the synovial tissue • This results in hypoxia and metabolic acidosis. • The reduction in pH results in the release of hydrolytic lysosomal enzymes from the synovial cells into the surrounding tissue • This initiates erosion of the articular cartil ...
... • Occlusion of blood vessels decreases blood flow to the synovial tissue • This results in hypoxia and metabolic acidosis. • The reduction in pH results in the release of hydrolytic lysosomal enzymes from the synovial cells into the surrounding tissue • This initiates erosion of the articular cartil ...
The endoplasmic reticulum exerts control over organelle streaming
... cytoskeletal forces are in place to propel these organelles. The ER is arguably one of the organelles with the largest membrane extension and it is in close vicinity to the other organelles (Fig. S3). The evidence proposed above that ER streaming does not entirely depend on the cytoskeleton (Fig. 2C ...
... cytoskeletal forces are in place to propel these organelles. The ER is arguably one of the organelles with the largest membrane extension and it is in close vicinity to the other organelles (Fig. S3). The evidence proposed above that ER streaming does not entirely depend on the cytoskeleton (Fig. 2C ...
template - ISRFG 2016
... transcribed in the stele. The SHR proteins then move in the initials where they induce SCR gene transcription. SHR and SCR proteins induce together the asymetrical division separating two GT cell layers and SHR specify endodermis identity of the inner GT cell layer. SCR, by protein-protein interacti ...
... transcribed in the stele. The SHR proteins then move in the initials where they induce SCR gene transcription. SHR and SCR proteins induce together the asymetrical division separating two GT cell layers and SHR specify endodermis identity of the inner GT cell layer. SCR, by protein-protein interacti ...
9700/04 - StudyGuide.PK
... (a) Describe the importance of ATP in cells, giving two examples of processes in which it is used. ...
... (a) Describe the importance of ATP in cells, giving two examples of processes in which it is used. ...
Changes in Levels of Cellular Constituents in Suspension Culture of
... medium devoid of phosphate. Thus, Pi is a very important moiety which affects many metabolic processes and, as a result, influences the rate of cell growth and the accumulation of sec ondary products. Until now, only a little information has been available about the effects of Pi on the metabolism ...
... medium devoid of phosphate. Thus, Pi is a very important moiety which affects many metabolic processes and, as a result, influences the rate of cell growth and the accumulation of sec ondary products. Until now, only a little information has been available about the effects of Pi on the metabolism ...
Simulating the Hallmarks of Cancer
... new targets for therapy. If, on the other hand, the hallmarks explain cancer reasonably well, phenomena arising in the model may give rise to testable hypothesis about cancer. CancerSim models cancer abstractly, at the level of cellular interactions within a solid animal tissue. The simulation takes ...
... new targets for therapy. If, on the other hand, the hallmarks explain cancer reasonably well, phenomena arising in the model may give rise to testable hypothesis about cancer. CancerSim models cancer abstractly, at the level of cellular interactions within a solid animal tissue. The simulation takes ...
the effects of egta and trypsin on the serum requirements for cell
... than to native collagen fibres (Engvall & Rouslahti, 1977). As mentioned above, serumderived fibronectin does not bind directly to cell surfaces, and mediates cell attachment to denatured collagen by first forming a complex with the collagen substratum, followed by cell attachment to this fibronecti ...
... than to native collagen fibres (Engvall & Rouslahti, 1977). As mentioned above, serumderived fibronectin does not bind directly to cell surfaces, and mediates cell attachment to denatured collagen by first forming a complex with the collagen substratum, followed by cell attachment to this fibronecti ...
Condensin II Promotes the Formation of Chromosome Territories by
... In Drosophila, multiple chromosome organization schemes have been well characterized. The Rabl configuration is observed in many diploid nuclei such as those of the early embryo and the larval central nervous system [19,20]. Polyploid-polytene chromosomes, such as those of the larval salivary gland, ...
... In Drosophila, multiple chromosome organization schemes have been well characterized. The Rabl configuration is observed in many diploid nuclei such as those of the early embryo and the larval central nervous system [19,20]. Polyploid-polytene chromosomes, such as those of the larval salivary gland, ...
Cardiac reparation: fixing the heart with cells, new vessels and genes
... finding provides direct evidence for the contribution of regenerate the damaged fibres. From the clinical point of transplanted cells to the overall improvement in function. view, skeletal myoblasts offer several advantages. First, their A causal relationship between the presence of engrafted autolo ...
... finding provides direct evidence for the contribution of regenerate the damaged fibres. From the clinical point of transplanted cells to the overall improvement in function. view, skeletal myoblasts offer several advantages. First, their A causal relationship between the presence of engrafted autolo ...
Biology of the Cell
... Although most cells are small, some cells are nonetheless quite large and have apparently overcome the surface areato-volume problem by one or more adaptive mechanisms. For example, some cells have more than one nucleus, allowing genetic information to be spread around a large cell. Also, some large ...
... Although most cells are small, some cells are nonetheless quite large and have apparently overcome the surface areato-volume problem by one or more adaptive mechanisms. For example, some cells have more than one nucleus, allowing genetic information to be spread around a large cell. Also, some large ...
The cortical cytoskeletal network and cell-wall
... Microtubules were labelled using the freeze shattering technique of Wasteneys et al. (1997). Briefly, cells were collected and washed three times with fresh WHS and then fixed in 0.5 % glutaraldehyde and 1.5 % paraformaldehyde (EMS) in a microtubule stabilizing buffer (MtbSB) containing 50 mM PIPES, ...
... Microtubules were labelled using the freeze shattering technique of Wasteneys et al. (1997). Briefly, cells were collected and washed three times with fresh WHS and then fixed in 0.5 % glutaraldehyde and 1.5 % paraformaldehyde (EMS) in a microtubule stabilizing buffer (MtbSB) containing 50 mM PIPES, ...
Determination of Symmetric and Asymmetric Division Planes in
... types. Division planes in both symmetrically and asymmetrically dividing cells are established through the action of a cortical preprophase band (PPB) of cytoskeletal filaments, which is disassembled upon transition to metaphase, leaving behind a cortical division site (CDS) to which the cytokinetic ...
... types. Division planes in both symmetrically and asymmetrically dividing cells are established through the action of a cortical preprophase band (PPB) of cytoskeletal filaments, which is disassembled upon transition to metaphase, leaving behind a cortical division site (CDS) to which the cytokinetic ...
poster of our research
... experiments, cells starved for 12-24 hrs, then concentrated by reverse-filtration through 20-40 mm mesh to densities of ca. 20-80 cells mL-1. Cells were enumerated by settling and counting after fixation with acid Lugol’s. ...
... experiments, cells starved for 12-24 hrs, then concentrated by reverse-filtration through 20-40 mm mesh to densities of ca. 20-80 cells mL-1. Cells were enumerated by settling and counting after fixation with acid Lugol’s. ...
Permanent cell cycle exit in G2 phase after DNA damage in normal
... is that p21 is not essential for initiating G2 arrest but rather contributes to its maintenance. Although widely used, the exact meaning of this concept has remained unclear. The precise role and critical G2 targets of p21 in response to DNA damage have not yet been de®ned, partly due to the use of ...
... is that p21 is not essential for initiating G2 arrest but rather contributes to its maintenance. Although widely used, the exact meaning of this concept has remained unclear. The precise role and critical G2 targets of p21 in response to DNA damage have not yet been de®ned, partly due to the use of ...
The Plant Cell - Gunawardena Lab
... of epidermal and mesophyll cells undergo PCD, whereas in adjacent, apparently identical tissues, PCD is not initiated. Although it is possible that developing leaf veins provide a positional signal for the initiation of cell death in these patches, nothing is known about the developmental cues, sign ...
... of epidermal and mesophyll cells undergo PCD, whereas in adjacent, apparently identical tissues, PCD is not initiated. Although it is possible that developing leaf veins provide a positional signal for the initiation of cell death in these patches, nothing is known about the developmental cues, sign ...
Mitosis
Mitosis is a part of the cell cycle in which chromosomes in a cell nucleus are separated into two identical sets of chromosomes, each in its own nucleus. In general, mitosis (division of the nucleus) is often followed by cytokinesis, which divides the cytoplasm, organelles and cell membrane into two new cells containing roughly equal shares of these cellular components. Mitosis and cytokinesis together define the mitotic (M) phase of an animal cell cycle—the division of the mother cell into two daughter cells, genetically identical to each other and to their parent cell.The process of mitosis is divided into stages corresponding to the completion of one set of activities and the start of the next. These stages are prophase, prometaphase, metaphase, anaphase, and telophase. During mitosis, the chromosomes, which have already duplicated, condense and attach to fibers that pull one copy of each chromosome to opposite sides of the cell. The result is two genetically identical daughter nuclei. The cell may then divide by cytokinesis to produce two daughter cells. Producing three or more daughter cells instead of normal two is a mitotic error called tripolar mitosis or multipolar mitosis (direct cell triplication / multiplication). Other errors during mitosis can induce apoptosis (programmed cell death) or cause mutations. Certain types of cancer can arise from such mutations.Mitosis occurs only in eukaryotic cells and the process varies in different organisms. For example, animals undergo an ""open"" mitosis, where the nuclear envelope breaks down before the chromosomes separate, while fungi undergo a ""closed"" mitosis, where chromosomes divide within an intact cell nucleus. Furthermore, most animal cells undergo a shape change, known as mitotic cell rounding, to adopt a near spherical morphology at the start of mitosis. Prokaryotic cells, which lack a nucleus, divide by a different process called binary fission.