Conjecture: Can Continuous Regeneration Lead to Immortality
... as the head, tentacles, and the foot and make up around 20% of the tissue, or are lost through their incorporation into newly forming buds4 making up 80% of the lost cell mass, as can been seen in Figure 1. Therefore, it is obvious that “old” cells do not persist for any length of time in the hydra ...
... as the head, tentacles, and the foot and make up around 20% of the tissue, or are lost through their incorporation into newly forming buds4 making up 80% of the lost cell mass, as can been seen in Figure 1. Therefore, it is obvious that “old” cells do not persist for any length of time in the hydra ...
Different subcellular locations of secretome components of
... & Theriot, 2006). Polar distribution of ActA is required for bacterial actin-based motility and successful infection. Rafelski & Theriot (2006) showed that upon induced expression an ActA-RFP (red fluorescent protein) fusion initially appeared at one to four sites along the cylindrical body of the b ...
... & Theriot, 2006). Polar distribution of ActA is required for bacterial actin-based motility and successful infection. Rafelski & Theriot (2006) showed that upon induced expression an ActA-RFP (red fluorescent protein) fusion initially appeared at one to four sites along the cylindrical body of the b ...
MATH 100 V1A
... for some constant k (to be determined). From class, we know that the solutions to this differential equation are of the form P (t) = Aekt , for some other constant A (also to be determined). We are also told that the cell culture initially has 500 cells, so 500 = P (0) = Ae0 = A. Therefore our equat ...
... for some constant k (to be determined). From class, we know that the solutions to this differential equation are of the form P (t) = Aekt , for some other constant A (also to be determined). We are also told that the cell culture initially has 500 cells, so 500 = P (0) = Ae0 = A. Therefore our equat ...
L egionella pneumophila
... Freeze-etching of L . pneurnophila colonies fixed in situ showed close aggregates of micro-organisms in longitudinal and transverse arrangement to the plane of fracture (Fig. 1 a). In these colonies, bacterial cells more than 20 pm in length were common (Fig. 1 b). The major fracture plane occurred ...
... Freeze-etching of L . pneurnophila colonies fixed in situ showed close aggregates of micro-organisms in longitudinal and transverse arrangement to the plane of fracture (Fig. 1 a). In these colonies, bacterial cells more than 20 pm in length were common (Fig. 1 b). The major fracture plane occurred ...
A Heparan Sulfate-containing Fraction of Bone
... The extracellular matrix, including collagen, glycosaminoglycan/proteoglycan, elastin, and glycoproteins, such as fibronectin and laminin (1), can influence the differentiation process of a variety of cell types (2, 3). Although malignant cells charac teristically have lost a great deal of regulatio ...
... The extracellular matrix, including collagen, glycosaminoglycan/proteoglycan, elastin, and glycoproteins, such as fibronectin and laminin (1), can influence the differentiation process of a variety of cell types (2, 3). Although malignant cells charac teristically have lost a great deal of regulatio ...
Turgor Pressure
... transport, movement and can be involved in cell metabolism. A fundamental difference between plants and animals is the plant cell wall that allows them to generate substantial hydrostatic pressures – the turgor pressure. The regulation of turgor pressure is often the key to plant response to changes ...
... transport, movement and can be involved in cell metabolism. A fundamental difference between plants and animals is the plant cell wall that allows them to generate substantial hydrostatic pressures – the turgor pressure. The regulation of turgor pressure is often the key to plant response to changes ...
Labeled Schwann cell transplantation
... performed to detect PLAP DNA at 1 or 24 h after transplantation into uninjured spinal cord and 1 h, 24 h, 8 days, or 14 days after transplantation into the acutely contused spinal cord (for animal details, see Table 2). PLAP DNA was detectable in all animals up to 24 h after transplantation of intac ...
... performed to detect PLAP DNA at 1 or 24 h after transplantation into uninjured spinal cord and 1 h, 24 h, 8 days, or 14 days after transplantation into the acutely contused spinal cord (for animal details, see Table 2). PLAP DNA was detectable in all animals up to 24 h after transplantation of intac ...
Root cytoskeleton: its role in perception of and response to gravity
... cytoskeleton in gravistimulated root cells. In addition, we will consider all those cytoskeletal functions known from other biological systems that might be relevant for the elucidation of processes controlling gravisensing, signal transduction, and graviresponse of roots. Cytoskeletal involvement i ...
... cytoskeleton in gravistimulated root cells. In addition, we will consider all those cytoskeletal functions known from other biological systems that might be relevant for the elucidation of processes controlling gravisensing, signal transduction, and graviresponse of roots. Cytoskeletal involvement i ...
Protoplast Culture: definition
... Once the protoplasts have regenerated a cell wall, they undergo cell division and form a callus.This callus can be subcultured. The callus may undergo embryogenesis or organogenesis after about 3-4 weeks, in the correct culture conditions. The ...
... Once the protoplasts have regenerated a cell wall, they undergo cell division and form a callus.This callus can be subcultured. The callus may undergo embryogenesis or organogenesis after about 3-4 weeks, in the correct culture conditions. The ...
A major glycoprotein of the nuclear pore complex is a membrane
... proteins (Gerace et al., 1978; Snow et al., 1987). A similar was previously obtained with labeling pattern for gp2 chicken polyclonal antibodies (Gerace et al., 1982). In addition to this nuclear staining, RL20 also labeled small cytoplasmic bodies that were frequently near the nucleus and that vari ...
... proteins (Gerace et al., 1978; Snow et al., 1987). A similar was previously obtained with labeling pattern for gp2 chicken polyclonal antibodies (Gerace et al., 1982). In addition to this nuclear staining, RL20 also labeled small cytoplasmic bodies that were frequently near the nucleus and that vari ...
Human herpesvirus 8 and Kaposi`s sarcoma in the - UvA-DARE
... Objective:: To determine the utility of vascular endothelial growth factor (VEGF) concentrations in serum as a predictive markerr for AIDS-KS. Design:: Sera were obtained from 40 homosexual men who seroconverted for HIV-1 and HHV8 prior to or during their participationn in the Amsterdam Cohort Studi ...
... Objective:: To determine the utility of vascular endothelial growth factor (VEGF) concentrations in serum as a predictive markerr for AIDS-KS. Design:: Sera were obtained from 40 homosexual men who seroconverted for HIV-1 and HHV8 prior to or during their participationn in the Amsterdam Cohort Studi ...
Chromosome organization and dynamics during
... in cytogenetics tools, including improvements in fluorescent in situ hybridization (FISH) protocols and development of live imaging techniques. Some of the most significant discoveries have been understanding of chromosome arrangement in interphase nuclei in Arabidopsis thaliana and finding that int ...
... in cytogenetics tools, including improvements in fluorescent in situ hybridization (FISH) protocols and development of live imaging techniques. Some of the most significant discoveries have been understanding of chromosome arrangement in interphase nuclei in Arabidopsis thaliana and finding that int ...
Immunoglobulin Heavy Chain and Binding Protein Complexes Are
... BiP functions primarily to bind defective proteins in the ER and target them for intracellular degradation or whether it may also be involved in retaining nascent proteins in the ER until their folding and assembly are complete, perhaps even facilitating these processes. For BiP to regulate normal p ...
... BiP functions primarily to bind defective proteins in the ER and target them for intracellular degradation or whether it may also be involved in retaining nascent proteins in the ER until their folding and assembly are complete, perhaps even facilitating these processes. For BiP to regulate normal p ...
Effect of sanguinarine in drinking water on Salmonella control and
... intestinal mucosa [1, 3, 4]. Adequate intestinal microbiota balance was maintained for a long time in broiler production due to the use of antibiotic growth promoters. Because of the legal restriction on the use of these antibiotics in animal feeds, other measures to control GIT microbiota and mucos ...
... intestinal mucosa [1, 3, 4]. Adequate intestinal microbiota balance was maintained for a long time in broiler production due to the use of antibiotic growth promoters. Because of the legal restriction on the use of these antibiotics in animal feeds, other measures to control GIT microbiota and mucos ...
Lesson Overview
... Many protists have complex sexual life cycles in which they alternate between a diploid and a haploid phase, a process known as alternation of generations. ...
... Many protists have complex sexual life cycles in which they alternate between a diploid and a haploid phase, a process known as alternation of generations. ...
Here - Events
... pauses cell cycle progression to partition the nuclei into individual cells and to assign those cells distinct developmental fates. The pause in cell cycle is analogous to the midblastula transition observed in many organisms and is associated with the degradation of a subset of maternally supplied ...
... pauses cell cycle progression to partition the nuclei into individual cells and to assign those cells distinct developmental fates. The pause in cell cycle is analogous to the midblastula transition observed in many organisms and is associated with the degradation of a subset of maternally supplied ...
pteridophyta - Institutul de Biologie
... Histological analyses on semi fine section also revealed a similar structural architecture of the rhizome and leaves tissues (Fig. 1) both in vitro as well as in situ conditions. Comparative analyses of the iso-enzymatic spectra used as biochemical marker showed that certain loci can be used as mark ...
... Histological analyses on semi fine section also revealed a similar structural architecture of the rhizome and leaves tissues (Fig. 1) both in vitro as well as in situ conditions. Comparative analyses of the iso-enzymatic spectra used as biochemical marker showed that certain loci can be used as mark ...
Ch 3 Cell Powerpoints Part 1
... Warm Up: Record and answer the following question on p.9 of your notebook (10 min) Name the four elements that compose living matter. Distinguish between cell, organelles and inclusion. EQ: How are cell organelles like a factory? (Write this question and be prepared to answer at end of cla ...
... Warm Up: Record and answer the following question on p.9 of your notebook (10 min) Name the four elements that compose living matter. Distinguish between cell, organelles and inclusion. EQ: How are cell organelles like a factory? (Write this question and be prepared to answer at end of cla ...
PCTPC201500400LSBR1_pap_plantcell 1..16
... multiple biological replicates for all samples. Conclusions below are all supported by multiple time points and samples. Differential Gene Expression between Mid-G1 and S/M To focus on genes regulated specifically in relation to the cell cycle, we initially tested for differentially expressed genes, ...
... multiple biological replicates for all samples. Conclusions below are all supported by multiple time points and samples. Differential Gene Expression between Mid-G1 and S/M To focus on genes regulated specifically in relation to the cell cycle, we initially tested for differentially expressed genes, ...
Promotion of cardiovascular disease by exposure to the air pollutant
... the increased expression of enzymes and proteins that amplify pulmonary redox reactions, such as the iNOS, cell surface adhesion molecules, and cytokines that promote inflammatory cell accumulation and trafficking. The activated macrophages and oxidatively injured epithelial cells that are “primed” ...
... the increased expression of enzymes and proteins that amplify pulmonary redox reactions, such as the iNOS, cell surface adhesion molecules, and cytokines that promote inflammatory cell accumulation and trafficking. The activated macrophages and oxidatively injured epithelial cells that are “primed” ...
A novel role for 14–3–3s in regulating epithelial
... the C-terminal 40 amino acids that constitute part of the ligand-binding domain of 14–3–3s. A mouse model known as repeated epilation (Er) develops a skin differentiation defect due to germline expression of this mutant form of 14–3–3s (Herron et al. 2005; Li et al. 2005). We first assessed whether ...
... the C-terminal 40 amino acids that constitute part of the ligand-binding domain of 14–3–3s. A mouse model known as repeated epilation (Er) develops a skin differentiation defect due to germline expression of this mutant form of 14–3–3s (Herron et al. 2005; Li et al. 2005). We first assessed whether ...
A myosin inhibitor impairs auxin
... Additional control experiments (Fig. 2C) tested the reversibility of the inhibition by BDM. When the inhibitor was washed out after 2 days, the cell number per file was fully restored and within 4 days reached the value observed in untreated controls. BDM does not inhibit cell elongation The cell le ...
... Additional control experiments (Fig. 2C) tested the reversibility of the inhibition by BDM. When the inhibitor was washed out after 2 days, the cell number per file was fully restored and within 4 days reached the value observed in untreated controls. BDM does not inhibit cell elongation The cell le ...
A Geminivirus lnduces Expression of a Host DNA Synthesis Protein
... In some cases, labeled cells were severely necrotic, as indicated by a uniform loss of chlorophyll autofluorescence throughout the cell (Figure 21). Cells showing different degrees of necrosis were seen in leaf tissue, as demonstrated by the necrotic cells in Figures 2C, 2H, and 21. Necrotic cells, ...
... In some cases, labeled cells were severely necrotic, as indicated by a uniform loss of chlorophyll autofluorescence throughout the cell (Figure 21). Cells showing different degrees of necrosis were seen in leaf tissue, as demonstrated by the necrotic cells in Figures 2C, 2H, and 21. Necrotic cells, ...
A Pseudomonas aeruginosa Type VI Secretion Phospholipase D Effector Targets Both Prokaryotic and Eukaryotic Cells
... including peptidoglycan hydrolases, nucleases, and phospholipases. The best-studied examples are Tse1–Tse3, which are H1-T6SS-dependent antibacterial toxin effectors. Tse1 and Tse3 have amidase and muramidase activity and act in the periplasm of target Gram-negative bacteria cells to degrade the pep ...
... including peptidoglycan hydrolases, nucleases, and phospholipases. The best-studied examples are Tse1–Tse3, which are H1-T6SS-dependent antibacterial toxin effectors. Tse1 and Tse3 have amidase and muramidase activity and act in the periplasm of target Gram-negative bacteria cells to degrade the pep ...
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.