Fifty Ways to Make a Neuron:* Shifts in Stem Cell Hierarchy and
... accepted exception to this rule is radial glial cells, a specialized, transient cell type with a long process extending from the ventricular zone to the pial surface (68). Extensive work by Rakic and colleagues has shown that these radially organized processes serve as a guiding scaffold for young m ...
... accepted exception to this rule is radial glial cells, a specialized, transient cell type with a long process extending from the ventricular zone to the pial surface (68). Extensive work by Rakic and colleagues has shown that these radially organized processes serve as a guiding scaffold for young m ...
In vitro study of chorionic and ectoplacental
... origin migrated to the anterior part of the chorionic layer but the foetal capillaries never developed in the trophoblastic tissues. After 48 h culture, many foetal red blood cells were found within the chorionic cells, having been phagocytosed by them. The formation of large multinucleated cells or ...
... origin migrated to the anterior part of the chorionic layer but the foetal capillaries never developed in the trophoblastic tissues. After 48 h culture, many foetal red blood cells were found within the chorionic cells, having been phagocytosed by them. The formation of large multinucleated cells or ...
Andrei Fagarasanu Department of Cell Biology Supervisor: Dr
... To counteract the osmotic stress of an aqueous environment (when it rains, for example), Dictyostelia pump protons into a membranous organelle called the contractile vacuole (CV), generating an osmotic gradient that sucks up extra water from the cytoplasm. The vacuole swells up and fuses with other ...
... To counteract the osmotic stress of an aqueous environment (when it rains, for example), Dictyostelia pump protons into a membranous organelle called the contractile vacuole (CV), generating an osmotic gradient that sucks up extra water from the cytoplasm. The vacuole swells up and fuses with other ...
Muscle Tissue - El Camino College
... Are about twice the _____________ of red fibers Contain more ______________ and generate more power Have fewer mitochondria & capillaries but many ________ containing glycosomes ___________ respiration provides quick bursts of energy, but can’t continue for long Common in upper ____ muscles that lif ...
... Are about twice the _____________ of red fibers Contain more ______________ and generate more power Have fewer mitochondria & capillaries but many ________ containing glycosomes ___________ respiration provides quick bursts of energy, but can’t continue for long Common in upper ____ muscles that lif ...
- UCL Discovery
... MVB biogenesis or diversion of MVBs from the lysosomal pathway is not clear. OA1 (also known as GPR143) is a seven transmembrane protein that shares structural and functional homology with heterotrimeric G-protein-coupled receptors (GPCRs) and is expressed exclusively in melanogenic cells (Schiaffin ...
... MVB biogenesis or diversion of MVBs from the lysosomal pathway is not clear. OA1 (also known as GPR143) is a seven transmembrane protein that shares structural and functional homology with heterotrimeric G-protein-coupled receptors (GPCRs) and is expressed exclusively in melanogenic cells (Schiaffin ...
Planar cell polarity signalling regulates cell adhesion properties in
... Organ formation requires the precise assembly of progenitor cells into a functional multicellular structure. Mechanical forces probably participate in this process but how they influence organ morphogenesis is still unclear. Here, we show that Wnt11- and Prickle1a-mediated planar cell polarity (PCP) ...
... Organ formation requires the precise assembly of progenitor cells into a functional multicellular structure. Mechanical forces probably participate in this process but how they influence organ morphogenesis is still unclear. Here, we show that Wnt11- and Prickle1a-mediated planar cell polarity (PCP) ...
20121014193054_DVL_2
... al.,2004; Kassai et al., 2005) and of FGFs such as Sprouty (Klein et al., 2006) are required for development of the correct tooth number, exact shape and optimal hard tissue production thus underlining the key role of finetuning in regulatory control (Tummers and Thesleff, 2009). ...
... al.,2004; Kassai et al., 2005) and of FGFs such as Sprouty (Klein et al., 2006) are required for development of the correct tooth number, exact shape and optimal hard tissue production thus underlining the key role of finetuning in regulatory control (Tummers and Thesleff, 2009). ...
PDF
... In embryonic development of the leech HeMdeUa triaerialis,each of the four paired ectodermal teloblasts contributes some progeny to a characteristic dorsal or ventral territory of the epidermis. To ascertain the relative roles of cell lineage and cell interactions in generating the highly regular ep ...
... In embryonic development of the leech HeMdeUa triaerialis,each of the four paired ectodermal teloblasts contributes some progeny to a characteristic dorsal or ventral territory of the epidermis. To ascertain the relative roles of cell lineage and cell interactions in generating the highly regular ep ...
Tracheary Element Differentiation
... Arabidopsis Arabidopsis has a clear role in the functional analysis of genes identified in both Zinnia and trees. Extensive gene expression studies of xylem development in Arabidopsis have already been described (62). In the stem, primary vascular tissue development represents a developmental series ...
... Arabidopsis Arabidopsis has a clear role in the functional analysis of genes identified in both Zinnia and trees. Extensive gene expression studies of xylem development in Arabidopsis have already been described (62). In the stem, primary vascular tissue development represents a developmental series ...
生醫奈米影像技術
... nanometer peak) in quinine and not the entire absorption spectrum. Because the energy associated with fluorescence emission transitions is typically less than that of absorption, the resulting emitted photons have less energy and are shifted to longer wavelengths. This phenomenon is generally known ...
... nanometer peak) in quinine and not the entire absorption spectrum. Because the energy associated with fluorescence emission transitions is typically less than that of absorption, the resulting emitted photons have less energy and are shifted to longer wavelengths. This phenomenon is generally known ...
Heterarchy of transcription factors driving basal and luminal
... gamma (PPARg) is widely known as an essential and sufficient driver of adipogenesis,1,2 but it also plays roles in M1 to M2 polarisation of macrophages3 and differentiation of human urothelial cells of the bladder and associated urinary tract.4–6 When grown in vitro in the absence of serum or other ...
... gamma (PPARg) is widely known as an essential and sufficient driver of adipogenesis,1,2 but it also plays roles in M1 to M2 polarisation of macrophages3 and differentiation of human urothelial cells of the bladder and associated urinary tract.4–6 When grown in vitro in the absence of serum or other ...
Expression and Endocytosis of Lysosomal
... of the AGU alleles (Syvänen et al., 1992). The consequences of different mutations are well characterized, and they mainly influence folding and activation of the nascent AGA precursor and result in a failure of lysosomal transport (Ikonen et al., 1991b; Peltola et al., 1994, 1996; Riikonen et al., ...
... of the AGU alleles (Syvänen et al., 1992). The consequences of different mutations are well characterized, and they mainly influence folding and activation of the nascent AGA precursor and result in a failure of lysosomal transport (Ikonen et al., 1991b; Peltola et al., 1994, 1996; Riikonen et al., ...
characterisation of amino acid transport in red blood cells of a
... cells, in contrast, cellular uptake of this amino acid occurs via a novel group of transporters designated asc{C) (Young etal. 1975, 1976; Young and Ellory, 1977; Fincham et al. 1985a, 1987a). These transporters share system ASOs selectivity for neutral amino acids of intermediate size, are inhibite ...
... cells, in contrast, cellular uptake of this amino acid occurs via a novel group of transporters designated asc{C) (Young etal. 1975, 1976; Young and Ellory, 1977; Fincham et al. 1985a, 1987a). These transporters share system ASOs selectivity for neutral amino acids of intermediate size, are inhibite ...
Regulation of the human vitamin C transporters expressed in COS
... Liang, Wei-Jun, Daniel Johnson, Li-Sha Ma and Simon M. Jarvis. Regulation of the human vitamin C transporters expressed in COS-1 cells by protein kinase C. Am J Physiol Cell Physiol 283: C1696–C1704, 2002. First published July 24, 2002; 10.1152/ajpcell.00461.2001.—Protein kinase C (PKC) regulation o ...
... Liang, Wei-Jun, Daniel Johnson, Li-Sha Ma and Simon M. Jarvis. Regulation of the human vitamin C transporters expressed in COS-1 cells by protein kinase C. Am J Physiol Cell Physiol 283: C1696–C1704, 2002. First published July 24, 2002; 10.1152/ajpcell.00461.2001.—Protein kinase C (PKC) regulation o ...
Electron Microscopic Observations on the Excretion of Cell
... virtue of the plasticity of the cellular membrane that substances which cannot diffuse through it may be incorporated by, for example, pinocytosis (Lewis, 1931; Palade, 1953) or may be excreted from the cells. Although there may exist several mechanisms for the excretion or secretion of cellular pro ...
... virtue of the plasticity of the cellular membrane that substances which cannot diffuse through it may be incorporated by, for example, pinocytosis (Lewis, 1931; Palade, 1953) or may be excreted from the cells. Although there may exist several mechanisms for the excretion or secretion of cellular pro ...
Fungal pathogenicity Wolfgang Knogge
... surfaces. These findings indicate that in M. grisea at least two different cAMP-dependent signaling pathways and probably different cAMP-dependent protein kinases are required for plant infection, one being involved in surface sensing, the other leading to appressorial penetration. The recent identi ...
... surfaces. These findings indicate that in M. grisea at least two different cAMP-dependent signaling pathways and probably different cAMP-dependent protein kinases are required for plant infection, one being involved in surface sensing, the other leading to appressorial penetration. The recent identi ...
BIOL_218_F_2008_MTX1_QA_100909.1
... 78. The type of epithelial tissue found lining the mouth and esophagus is: A. stratified cuboidal B. stratified squamous C. simple columnar D. transitional 79. Compact bone consists of osteocytes and layers of matrix arranged in concentric rings. A. True B. False 80. Fibrocartilage can be found in t ...
... 78. The type of epithelial tissue found lining the mouth and esophagus is: A. stratified cuboidal B. stratified squamous C. simple columnar D. transitional 79. Compact bone consists of osteocytes and layers of matrix arranged in concentric rings. A. True B. False 80. Fibrocartilage can be found in t ...
Plant microtubule organization
... Dissolution of the preprophase band and nuclear envelope coincides with formation of the mitotic spindle (Fig. 1B). Spindle poles are typically broad, not tightly focused as in centrosome-containing cells. At the anaphase-telophase transition, the phragmoplast† forms (Fig. 1C,D). Like spindles, phra ...
... Dissolution of the preprophase band and nuclear envelope coincides with formation of the mitotic spindle (Fig. 1B). Spindle poles are typically broad, not tightly focused as in centrosome-containing cells. At the anaphase-telophase transition, the phragmoplast† forms (Fig. 1C,D). Like spindles, phra ...
Developmental control of blood cell migration by the Drosophila VEGF pathway. Cell 108, 865-876. pdf
... period in midembryogenesis they migrate along specific pathways to disperse throughout the body, where they function as immune and interstitial cells. Like vertebrate monocytes and macrophages, insect hemocytes phagocytose or encapsulate foreign material and apoptotic cells (Hoffmann et al., 1999). ...
... period in midembryogenesis they migrate along specific pathways to disperse throughout the body, where they function as immune and interstitial cells. Like vertebrate monocytes and macrophages, insect hemocytes phagocytose or encapsulate foreign material and apoptotic cells (Hoffmann et al., 1999). ...
Cell cycle progression in response to oxygen levels | SpringerLink
... M phase, which is the process by which chromosomes are separated into two daughter cells, a process that is dependent on the formation of a mitotic spindle [37]. The cell cycle is a critical process to the cell, and must be strictly regulated to avoid hyperproliferation and genetic instability that ...
... M phase, which is the process by which chromosomes are separated into two daughter cells, a process that is dependent on the formation of a mitotic spindle [37]. The cell cycle is a critical process to the cell, and must be strictly regulated to avoid hyperproliferation and genetic instability that ...
Microbiology of the Rumen - Iowa State University: Animal Science
... Amylose can form an extended shape. Hydrogen bonding occurs between aligned chains. The aligned chains may form double stranded crystallites that are resistant to amylases. Amylopectin is formed by non-random α-1, 6 branching of the amylose-type α-(1, 4)-D-glucose structure. This branching is determ ...
... Amylose can form an extended shape. Hydrogen bonding occurs between aligned chains. The aligned chains may form double stranded crystallites that are resistant to amylases. Amylopectin is formed by non-random α-1, 6 branching of the amylose-type α-(1, 4)-D-glucose structure. This branching is determ ...
The centrosome orientation checkpoint is germline stem cell specific
... find that it functions uniquely in GSCs but not in their differentiating progeny. We show that the COC operates in the G2 phase of the cell cycle, independently of the spindle assembly checkpoint. This study may provide a framework for identifying and understanding similar mechanisms that might be i ...
... find that it functions uniquely in GSCs but not in their differentiating progeny. We show that the COC operates in the G2 phase of the cell cycle, independently of the spindle assembly checkpoint. This study may provide a framework for identifying and understanding similar mechanisms that might be i ...
Extracellular matrix
In biology, the extracellular matrix (ECM) is a collection of extracellular molecules secreted by cells that provides structural and biochemical support to the surrounding cells. Because multicellularity evolved independently in different multicellular lineages, the composition of ECM varies between multicellular structures; however, cell adhesion, cell-to-cell communication and differentiation are common functions of the ECM.The animal extracellular matrix includes the interstitial matrix and the basement membrane. Interstitial matrix is present between various animal cells (i.e., in the intercellular spaces). Gels of polysaccharides and fibrous proteins fill the interstitial space and act as a compression buffer against the stress placed on the ECM. Basement membranes are sheet-like depositions of ECM on which various epithelial cells rest.The plant ECM includes cell wall components, like cellulose, in addition to more complex signaling molecules. Some single-celled organisms adopt multicelluar biofilms in which the cells are embedded in an ECM composed primarily of extracellular polymeric substances (EPS).