Diarch Symmetry of the Vascular Bundle in
... the central cylinder or stele is the pericycle, which is traditionally regarded as one extra concentric layer. Indeed, all pericycle cells share common physical properties and form a unique layer of regularly shaped cells in contact with each other by their tangential cell walls (Dolan et al., 1993) ...
... the central cylinder or stele is the pericycle, which is traditionally regarded as one extra concentric layer. Indeed, all pericycle cells share common physical properties and form a unique layer of regularly shaped cells in contact with each other by their tangential cell walls (Dolan et al., 1993) ...
In the prevailing view Conducitn is usually considered to act as a
... Smalley et al., 1999; Wu et al., 2009; Zeng et al., 2008). Axin molecules form dynamic oligomers by head-to-tail interaction of their DIX domains (Fiedler et al., 2011; Kishida et al., 1999). These complexes, often seen as cytoplasmic puncta upon overexpression, are thought to provide high avidity i ...
... Smalley et al., 1999; Wu et al., 2009; Zeng et al., 2008). Axin molecules form dynamic oligomers by head-to-tail interaction of their DIX domains (Fiedler et al., 2011; Kishida et al., 1999). These complexes, often seen as cytoplasmic puncta upon overexpression, are thought to provide high avidity i ...
How to define flow cytometry ? Méthodes d’étude de la cellule
... Rappel PE-CY5 excited at 488 nm by the emit energy transferred from PE but also by the laser 633 nm via CY5, compensations could be elevated or difficult to realize so try to replace PE-CY5 by PECY5.5 or PE-CY7 in a combination with APC ...
... Rappel PE-CY5 excited at 488 nm by the emit energy transferred from PE but also by the laser 633 nm via CY5, compensations could be elevated or difficult to realize so try to replace PE-CY5 by PECY5.5 or PE-CY7 in a combination with APC ...
In Vitro Reconstitution of SCF Substrate Ubiquitination with Purified
... approximately 2 g is shown. (C) SCFCdc4 was expressed in Hi5 insect cells by coinfection of baculoviruses encoding Py3HA2‐tagged Cdc4, Cdc53, HA‐tagged Skp1, and Hrt1. Forty‐eight hours postinfection, lysates were prepared and SCFCdc4 was purified on protein A‐Sepharose beads that had been coupled ...
... approximately 2 g is shown. (C) SCFCdc4 was expressed in Hi5 insect cells by coinfection of baculoviruses encoding Py3HA2‐tagged Cdc4, Cdc53, HA‐tagged Skp1, and Hrt1. Forty‐eight hours postinfection, lysates were prepared and SCFCdc4 was purified on protein A‐Sepharose beads that had been coupled ...
Diacylglycerol kinases - University of Toronto Mississauga
... multicellular organisms are classified into five subtypes. Because most of these organisms express at least one DGK ortholog of each subtype, the five DGK subtypes appear to have distinct functions. Nine mammalian DGK isoforms have been identified (Fig. 1). The heterogeneity of this gene family is s ...
... multicellular organisms are classified into five subtypes. Because most of these organisms express at least one DGK ortholog of each subtype, the five DGK subtypes appear to have distinct functions. Nine mammalian DGK isoforms have been identified (Fig. 1). The heterogeneity of this gene family is s ...
Notch and the Awesome Power of Genetics
... The simple cellular anatomy and invariant cell lineage of wild-type hermaphrodites allows mutants to be understood in terms of altered cell-fate decisions by individual cells (Horvitz and Sulston 1980; Sulston and Horvitz 1981). When Paul Sternberg, with his encyclopedic knowledge of postembryonic w ...
... The simple cellular anatomy and invariant cell lineage of wild-type hermaphrodites allows mutants to be understood in terms of altered cell-fate decisions by individual cells (Horvitz and Sulston 1980; Sulston and Horvitz 1981). When Paul Sternberg, with his encyclopedic knowledge of postembryonic w ...
Clathrin in mitotic spindles - AJP-Cell
... from the plasma membrane and of budding of transport vesicles from the trans-Golgi network have been made at the morphological, biochemical, cellular, genetic, and atomic structural levels (3, 16, 23, 25, 29, 32). Clathrin is comprised of two subunits, a heavy chain of relative molecular mass (Mr) o ...
... from the plasma membrane and of budding of transport vesicles from the trans-Golgi network have been made at the morphological, biochemical, cellular, genetic, and atomic structural levels (3, 16, 23, 25, 29, 32). Clathrin is comprised of two subunits, a heavy chain of relative molecular mass (Mr) o ...
Polyamines in embryogenic cultures of Norway spruce (Picea abies
... The differentiation of somatic embryos from tissue cultures has been reported for several economically important conifers (Bonga and Durzan 1987). The development of somatic embryos is very sensitive to changes in the constituents of the medium and the physical environment of culture (Bhojwani and R ...
... The differentiation of somatic embryos from tissue cultures has been reported for several economically important conifers (Bonga and Durzan 1987). The development of somatic embryos is very sensitive to changes in the constituents of the medium and the physical environment of culture (Bhojwani and R ...
Ciliary Microtubule Capping Structures Contain A
... To determine if the 97-kD polypeptides stained on immunoblots are present at the ciliary tip, the antibodies to the 97-kD polypeptides were affinity-purified from nitrocellulose blots and were used for immunofluorescence microscopy. The affinity-purified antibodies were tested by immunoblotting as s ...
... To determine if the 97-kD polypeptides stained on immunoblots are present at the ciliary tip, the antibodies to the 97-kD polypeptides were affinity-purified from nitrocellulose blots and were used for immunofluorescence microscopy. The affinity-purified antibodies were tested by immunoblotting as s ...
Control of convergent yolk syncytial layer nuclear movement in
... Up⬇1 μm/minute is the speed with which the progenitor patch moves. Since the time scale for cortical flow is much longer than that for elastic relaxation, the cortex may be described as an incompressible viscous fluid for the present purpose. In general, the flow profile is a function of the Reynold ...
... Up⬇1 μm/minute is the speed with which the progenitor patch moves. Since the time scale for cortical flow is much longer than that for elastic relaxation, the cortex may be described as an incompressible viscous fluid for the present purpose. In general, the flow profile is a function of the Reynold ...
Amphibian gastrulation: history and evolution of a 125 year
... directions our knowledge of gastrulation processes has been evolving during the second half of the 20th century. Table I summarizes important steps in Amphibian gastrulation studies. A prerequisite to the reading of this article concerns the meaning of invagination and involution to describe the ove ...
... directions our knowledge of gastrulation processes has been evolving during the second half of the 20th century. Table I summarizes important steps in Amphibian gastrulation studies. A prerequisite to the reading of this article concerns the meaning of invagination and involution to describe the ove ...
1 Calcium at the Cell Wall
... Pectins are secreted largely as methoxy-esters (70-80%), and only later de-esterified in the apoplast by the enzyme pectin methyl esterase (PME), which has also been secreted (Willats et al., 2001; Bosch and Hepler, 2005). The methoxylation pattern of newly secreted pectins is not known, but it is k ...
... Pectins are secreted largely as methoxy-esters (70-80%), and only later de-esterified in the apoplast by the enzyme pectin methyl esterase (PME), which has also been secreted (Willats et al., 2001; Bosch and Hepler, 2005). The methoxylation pattern of newly secreted pectins is not known, but it is k ...
Control of convergent yolk syncytial layer nuclear movement in
... Up⬇1 μm/minute is the speed with which the progenitor patch moves. Since the time scale for cortical flow is much longer than that for elastic relaxation, the cortex may be described as an incompressible viscous fluid for the present purpose. In general, the flow profile is a function of the Reynold ...
... Up⬇1 μm/minute is the speed with which the progenitor patch moves. Since the time scale for cortical flow is much longer than that for elastic relaxation, the cortex may be described as an incompressible viscous fluid for the present purpose. In general, the flow profile is a function of the Reynold ...
Introduction - ART
... Cells are continuously exposed to diverse external stimuli, ranging from soluble endocrine and paracrine factors to signaling molecules on neighboring cells. The cell must interpret these extracellular signals to produce an appropriate developmental or proliferative response. Receptors of the tyrosi ...
... Cells are continuously exposed to diverse external stimuli, ranging from soluble endocrine and paracrine factors to signaling molecules on neighboring cells. The cell must interpret these extracellular signals to produce an appropriate developmental or proliferative response. Receptors of the tyrosi ...
Radiological anatomy of frontal sinus (PDF Available)
... Frontal recess area: Is anatomically defined as the most anterior and superior part of anterior ethmoidal complex. This is precisely where from the frontal bone gets pneumatized. In the sagittal plane the frontal recess appears like an inverted funnel. It opens superiorly into the frontal sinus osti ...
... Frontal recess area: Is anatomically defined as the most anterior and superior part of anterior ethmoidal complex. This is precisely where from the frontal bone gets pneumatized. In the sagittal plane the frontal recess appears like an inverted funnel. It opens superiorly into the frontal sinus osti ...
Spatiotemporal Patterning of Reactive Oxygen Production and Ca2+
... propagated through the cell as a unidirectional wave with an estimated velocity of 15 m/s, reaching peak levels of at least 1 M (Figure 1E). The apical Ca2 gradient also was apparent on return to seawater (Figure 1E, a and b). Smaller excursions at resting Ca2 were observed occasionally, occurri ...
... propagated through the cell as a unidirectional wave with an estimated velocity of 15 m/s, reaching peak levels of at least 1 M (Figure 1E). The apical Ca2 gradient also was apparent on return to seawater (Figure 1E, a and b). Smaller excursions at resting Ca2 were observed occasionally, occurri ...
Plasticity in Cell Division Patterns and Auxin
... d Plant Biotechnology Institute, National Research Council of Canada, Saskatoon S7N 0W9, Canada e Molecular and Developmental Genetics, Institute Biology Leiden, Leiden University, 2333 BE Leiden, The Netherlands b Université ...
... d Plant Biotechnology Institute, National Research Council of Canada, Saskatoon S7N 0W9, Canada e Molecular and Developmental Genetics, Institute Biology Leiden, Leiden University, 2333 BE Leiden, The Netherlands b Université ...
... Mast cells are pivotal to the immediate or early response in asthma, and contain mediators which have profound effects on airway smooth muscle tone. The relationship between mast cell products and a heightened contraction of human airway smooth muscle, which could contribute to airway hyperresponsiv ...
Continuity And Change: Paradigm Shifts In Neural Induction
... information about how these processes occur. In fact, within the past five years, these techniques have occasioned three major paradigm shifts in this area. First, as we shall see, the paradigm for neural induction (since 1924) has been that soluble molecules are secreted by the organizer, a structu ...
... information about how these processes occur. In fact, within the past five years, these techniques have occasioned three major paradigm shifts in this area. First, as we shall see, the paradigm for neural induction (since 1924) has been that soluble molecules are secreted by the organizer, a structu ...
In vitro skin models to study epithelial regeneration from the hair
... cadaveric skin by removal of the epidermis and cellular components leaving behind essential extracellular matrix (ECM) and basement membrane proteins. DED is durable and has reduced or no antigenicity and the structural properties are retained even after cryopreservation [5], glycerol preservation [ ...
... cadaveric skin by removal of the epidermis and cellular components leaving behind essential extracellular matrix (ECM) and basement membrane proteins. DED is durable and has reduced or no antigenicity and the structural properties are retained even after cryopreservation [5], glycerol preservation [ ...
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).