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... higher temperature. When an animal fails to respond to the higher temperature by regeneration at the graft-host border the positional communication channel may be considered to be re-established. Gap junctions can be recognized in thin sections of normal tissue by the characteristic reduction in mem ...
... higher temperature. When an animal fails to respond to the higher temperature by regeneration at the graft-host border the positional communication channel may be considered to be re-established. Gap junctions can be recognized in thin sections of normal tissue by the characteristic reduction in mem ...
生醫奈米影像技術
... chemical damage and covalent modification. Upon transition from an excited singlet state to the excited triplet state, fluorophores may interact with another molecule to produce irreversible covalent modifications. The triplet state is relatively long-lived with respect to the singlet state, thus al ...
... chemical damage and covalent modification. Upon transition from an excited singlet state to the excited triplet state, fluorophores may interact with another molecule to produce irreversible covalent modifications. The triplet state is relatively long-lived with respect to the singlet state, thus al ...
Asymmetric Behavior in Stem Cells
... during development. In particular, all 959 cells of the worm have been traced (from 671 divisions) though the work of J. Sulston and colleagues [4, 5]. In particular, the first division of the C. elegans zygote involves par (partitioning) genes that lead to two cells of different developmental pathw ...
... during development. In particular, all 959 cells of the worm have been traced (from 671 divisions) though the work of J. Sulston and colleagues [4, 5]. In particular, the first division of the C. elegans zygote involves par (partitioning) genes that lead to two cells of different developmental pathw ...
Cells
... structural support maintains shape of cell provides anchorage for organelles protein fibers ...
... structural support maintains shape of cell provides anchorage for organelles protein fibers ...
Monosaccharide transporters in plants: structure, function and
... and mammals. Structural analyses performed with several members of this transporter superfamily identified protein domains or even specific amino acid residues putatively involved in substrate binding and specificity. Expression of plant monosaccharide transporter cDNAs in yeast cells and frog oocyt ...
... and mammals. Structural analyses performed with several members of this transporter superfamily identified protein domains or even specific amino acid residues putatively involved in substrate binding and specificity. Expression of plant monosaccharide transporter cDNAs in yeast cells and frog oocyt ...
Targeted disruption of fibroblast growth factor receptor
... signals via, high-affinity transmembrane FGFRs. In addition, exogenous FGF-2 interacts with heparan sulfate proteoglycans, which are non-signalling low-affinity binding sites that further modulate the cell response. During early development of the mouse embryo, such a role is played by abundantly ex ...
... signals via, high-affinity transmembrane FGFRs. In addition, exogenous FGF-2 interacts with heparan sulfate proteoglycans, which are non-signalling low-affinity binding sites that further modulate the cell response. During early development of the mouse embryo, such a role is played by abundantly ex ...
TRYPSIN SYNTHESIS AND STORAGE AS ZYMOGEN IN THE
... react with anti-TAP antibodies. Another possibility is that in the denatured condition, two of the three bands matched the same Mr, so two bands were visible and not three. The anti-TAP antibody detected the same bands as anti-IP, which means that the trypsin activation peptide was part of the amino ...
... react with anti-TAP antibodies. Another possibility is that in the denatured condition, two of the three bands matched the same Mr, so two bands were visible and not three. The anti-TAP antibody detected the same bands as anti-IP, which means that the trypsin activation peptide was part of the amino ...
performance of nonlinear visual units in ocular hypertension
... a nonlinear or Y type of response that is dominated by second harmonic distortion (Kaplan and Shapley, 1982; Marrocco et al., 1982; Derington and Lennie, 1984; Blakemore and Vital-Duran, 1986). The remainder of the LGN cells have linear responses and little or no second harmonic distortion. Recordin ...
... a nonlinear or Y type of response that is dominated by second harmonic distortion (Kaplan and Shapley, 1982; Marrocco et al., 1982; Derington and Lennie, 1984; Blakemore and Vital-Duran, 1986). The remainder of the LGN cells have linear responses and little or no second harmonic distortion. Recordin ...
Phloem RNA-binding proteins as potential components of the long
... it was deemed to play a role in translation initiation (Kemper et al., 1976; Benne and Hershey, 1978), although recent results indicate that it may participate in ribosome-related events, such as protein folding, rather than polypeptide chains synthesis (Jao and Chen, 2006; Zanelli et al., 2006). Th ...
... it was deemed to play a role in translation initiation (Kemper et al., 1976; Benne and Hershey, 1978), although recent results indicate that it may participate in ribosome-related events, such as protein folding, rather than polypeptide chains synthesis (Jao and Chen, 2006; Zanelli et al., 2006). Th ...
Microtubule and F-actin dynamics at the division site in living
... The F-actin we observe ranges from brightly fluorescent strands to much fainter, finer fluorescence that is not resolvable as separate elements. The degree of filament bundling cannot be determined by fluorescence microscopy, and we use the term “filament” in a generic, descriptive sense, not implyi ...
... The F-actin we observe ranges from brightly fluorescent strands to much fainter, finer fluorescence that is not resolvable as separate elements. The degree of filament bundling cannot be determined by fluorescence microscopy, and we use the term “filament” in a generic, descriptive sense, not implyi ...
Programmed Cell Death in Floral Organs: How and Why do Flowers
... Background Flowers have a species-specific, limited life span with an irreversible programme of senescence, which is largely independent of environmental factors, unlike leaf senescence, which is much more closely linked with external stimuli. Timing Life span of the whole flower is regulated fo ...
... Background Flowers have a species-specific, limited life span with an irreversible programme of senescence, which is largely independent of environmental factors, unlike leaf senescence, which is much more closely linked with external stimuli. Timing Life span of the whole flower is regulated fo ...
"Unusual" modifications and variations of
... and phosphates account only for a minority of the anionic properties of these multi-antennary complex-type chains. The majority of the negative charge appears to be due to multiple carboxylic acid groups on as yet unidentified residues. The most highly charged N-linked oligosaccharides from the same ...
... and phosphates account only for a minority of the anionic properties of these multi-antennary complex-type chains. The majority of the negative charge appears to be due to multiple carboxylic acid groups on as yet unidentified residues. The most highly charged N-linked oligosaccharides from the same ...
Neuronal polarity: from extracellular signals to
... coli (APC) protein with microtubule plus ends specifically at the leading edges, and makes the centrosome turn towards the front side of migrating cells in a dynein- or dynactin-dependent manner21. It might be interesting to examine whether extracellular signals such as WNT also regulate neuronal po ...
... coli (APC) protein with microtubule plus ends specifically at the leading edges, and makes the centrosome turn towards the front side of migrating cells in a dynein- or dynactin-dependent manner21. It might be interesting to examine whether extracellular signals such as WNT also regulate neuronal po ...
The Generic Nature of Protein Folding and Misfolding
... of small proteins—most having less than 100 residues—that fold to their native states without populating significantly any intermediate states (Jackson, 1998). A particularly important experimental strategy has been to use site-directed mutagenesis to probe the roles of individual residues in the fol ...
... of small proteins—most having less than 100 residues—that fold to their native states without populating significantly any intermediate states (Jackson, 1998). A particularly important experimental strategy has been to use site-directed mutagenesis to probe the roles of individual residues in the fol ...
Reactive oxygen species promote chloroplast dysfunction and
... This study focuses on the investigation of the roles of ROS signals derived from chloroplasts on the oxidative damage to chloroplast morphology and function, as well as SA hormone signaling defenses in Arabidopsis (Arabidopsis thaliana) in order to reveal a novel molecular mechanism of fumonisin B1 ...
... This study focuses on the investigation of the roles of ROS signals derived from chloroplasts on the oxidative damage to chloroplast morphology and function, as well as SA hormone signaling defenses in Arabidopsis (Arabidopsis thaliana) in order to reveal a novel molecular mechanism of fumonisin B1 ...
Hes genes regulate size, shape and histogenesis of the
... The basic helix-loop-helix genes Hes1 and Hes5 are essential effectors for Notch signalling, which regulates the maintenance of undifferentiated cells (Artavanis-Tsakonas et al., 1999; Gaiano and Fishell, 2002; Hitoshi et al., 2002; Honjo, 1996; Kageyama and Nakanishi, 1997; Selkoe and Kopan, 2003). ...
... The basic helix-loop-helix genes Hes1 and Hes5 are essential effectors for Notch signalling, which regulates the maintenance of undifferentiated cells (Artavanis-Tsakonas et al., 1999; Gaiano and Fishell, 2002; Hitoshi et al., 2002; Honjo, 1996; Kageyama and Nakanishi, 1997; Selkoe and Kopan, 2003). ...
Hornstein, E. - Weizmann Institute of Science
... We seek to gain insight into the role of miRNAs in key developmental events including differentiation, patterning and tissue size control and in miRNA contribution to the evolution of developmental pathways. The genomes of animals contain hundreds of miRNA genes, which encode for short regulatory RN ...
... We seek to gain insight into the role of miRNAs in key developmental events including differentiation, patterning and tissue size control and in miRNA contribution to the evolution of developmental pathways. The genomes of animals contain hundreds of miRNA genes, which encode for short regulatory RN ...
Decreased argyrophilic nucleolar organiser region
... score’ of the AgNOR expression did not differ from that of agematched controls. However, a noteworthy finding was related to a ‘specific score’ detected in the cerebellar cortex of nine SIUDS and four SIDS cases. Surprisingly, in fact, intermixed with several PCs showing a swollen, shrunken morphology ...
... score’ of the AgNOR expression did not differ from that of agematched controls. However, a noteworthy finding was related to a ‘specific score’ detected in the cerebellar cortex of nine SIUDS and four SIDS cases. Surprisingly, in fact, intermixed with several PCs showing a swollen, shrunken morphology ...
RNA interference and its role in the regulation of eucaryotic gene
... Evolutionarily conserved homologues of Dicer were also identified and tested in plants, fungi and mammals (Bernstein et al., 2001 b). dcr-1 mutants show a defect in RNAi and, additional, phenotypic abnormalities connected with a role for Dcr-1 in a regulatory pathway in which small temporal RNA (stR ...
... Evolutionarily conserved homologues of Dicer were also identified and tested in plants, fungi and mammals (Bernstein et al., 2001 b). dcr-1 mutants show a defect in RNAi and, additional, phenotypic abnormalities connected with a role for Dcr-1 in a regulatory pathway in which small temporal RNA (stR ...
Session 140 Cell Biology of Trauma and Acquired Disease
... staining was applied and the distribution of the nuclei within the nerve was assessed in three regions of 1,000 microns span along the length of the nerve. Myelin content was estimated with Luxol Fast Blue (LFB) staining and microglial activation with staining for Iba-1. Results: In all three groups ...
... staining was applied and the distribution of the nuclei within the nerve was assessed in three regions of 1,000 microns span along the length of the nerve. Myelin content was estimated with Luxol Fast Blue (LFB) staining and microglial activation with staining for Iba-1. Results: In all three groups ...
Actin Microfilaments Regulate Vacuolar Structures and Dynamics
... of daughter cell nuclei at early G1 phase, suggesting a requirement for the acto-myosin system for vacuolar morphogenesis during cell cycle progression. These results suggest that MFs support the vacuolar structures and that the acto-myosin system plays an essential role in vacuolar morphogenesis. ...
... of daughter cell nuclei at early G1 phase, suggesting a requirement for the acto-myosin system for vacuolar morphogenesis during cell cycle progression. These results suggest that MFs support the vacuolar structures and that the acto-myosin system plays an essential role in vacuolar morphogenesis. ...
File - Dr. Z.`s Biology
... Question: How many DNA nucleotides are found in the code for a single amino acid? a. One b. Two c. Three d. Four BACK TO GAME ...
... Question: How many DNA nucleotides are found in the code for a single amino acid? a. One b. Two c. Three d. Four BACK TO GAME ...
Stem Cells of the Adult Olfactory Epithelium
... observed. Given the disappearance of HBCs from the ventral OE in rats, the data suggest that GBCs are the most likely cell type for the MPP, and that duct cells are an alternate source for regenerating Sus cells (32,54). Other indirect evidence suggesting that some GBCs are multipotent comes from th ...
... observed. Given the disappearance of HBCs from the ventral OE in rats, the data suggest that GBCs are the most likely cell type for the MPP, and that duct cells are an alternate source for regenerating Sus cells (32,54). Other indirect evidence suggesting that some GBCs are multipotent comes from th ...
physiological and chemical architecture of a lobster ganglion with
... of this assay have already been published (15). With large inhibitory cell bodies the sample could be divided, so that a control tube containing aminooxyacetic acid could be run to give tissue blank levels of fluorescence. Glutamate was determined by dividing the sample in half and treating one port ...
... of this assay have already been published (15). With large inhibitory cell bodies the sample could be divided, so that a control tube containing aminooxyacetic acid could be run to give tissue blank levels of fluorescence. Glutamate was determined by dividing the sample in half and treating one port ...
Protein Sorting between Mitochondrial Membranes Specified by
... had an identical (and intact) pOCT NH2 terminus, as revealed by automated radiosequencing analysis (not shown), suggesting that the smaller product arose either from breakdown at the COOH terminus of the full-size product or from premature termination of translation. Despite having an intact NH2 ter ...
... had an identical (and intact) pOCT NH2 terminus, as revealed by automated radiosequencing analysis (not shown), suggesting that the smaller product arose either from breakdown at the COOH terminus of the full-size product or from premature termination of translation. Despite having an intact NH2 ter ...