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What a couple of dimensions can do for you
What a couple of dimensions can do for you

... the position of every cell (nucleus) is shown as a sphere (Fig. 1C). The spheres can be colored to demonstrate cell clones and their localization. SIMI BioCell also includes several functions that facilitate the tracing of cells in the embryo. Because the resolution of Nomarski optics improves at h ...
sample pages - Oxford University Press
sample pages - Oxford University Press

Populus endobetamannanase PtrMAN6 plays a role in coordinating
Populus endobetamannanase PtrMAN6 plays a role in coordinating

... PtrMAN6 that results in a larger molecular size as detected in the western blot. Thus we transformed Populus with a CaMV 35S:PtrMAN6 construct in order to produce a large amount of plant-sourced PtrMAN6 protein from nonPtrMAN6-expressing tissue. PtrMAN proteins were extracted from the young leaves o ...
Introduction: spatial origin of murine hematopoietic stem cells
Introduction: spatial origin of murine hematopoietic stem cells

... mesoderm apposed to endoderm.41 What are the specific inductive events that commit mesoderm in 2 vastly different tissue microenvironments to simultaneously produce cells with HSC activity? Many of the key molecules involved in the induction of the blood cell program have been identified (reviewed i ...
Cytotoxic Effects of Nanoparticles Assessed In Vitro and In Vivo
Cytotoxic Effects of Nanoparticles Assessed In Vitro and In Vivo

... Abstract An increasing number of applications is being ...
7th Grade Biology Textbook - Pickford Public Schools / Pickford
7th Grade Biology Textbook - Pickford Public Schools / Pickford

... through the membrane. If the cell membrane were completely permeable, the inside of the cell would be the same as the outside of the cell. It would be impossible for the cell to maintain homeostasis. Homeostasis means maintaining a stable internal environment. For example, if your body cells have a ...
File
File

... • Cellophane, visking tubing and dialysis tubing are artificial semi permeable membranes – what about the cell membrane? • Water, oxygen and carbon – dioxide can all pass across these membranes • Other substances have more difficulty ...
(a) (i) the three features correctly labelled on cheek cell
(a) (i) the three features correctly labelled on cheek cell

... (ribosomes) produce protein accept insulin / hormone / enzyme named is (made of) protein or allow many mitochondria (1) provide energy to build protein or to make protein (1) accept ATP for energy ...
Fine structure of cell types in an ameloblastoma
Fine structure of cell types in an ameloblastoma

... Abstracl. An unu.sually large and old ameloblastoma. which revealed a diverse histological appearance, was studied by light and electron microscopy. In the tumor, the epithelial component formed several patterns in the collagenous stroma. The epithelial islands, consisting of tall columnar cells sur ...
The Control of Arabidopsis thaliana Growth by Cell
The Control of Arabidopsis thaliana Growth by Cell

... indicating that its expression is under cell cycle control, in particular during the progression toward S phase. To get more insight into the regulation of FBL17, we examined its expression in dividing cells versus postmitotic cells (Figure 1A). Arabidopsis leaves were harvested at different develop ...
Effects of growth factors on proliferation and differentiation in
Effects of growth factors on proliferation and differentiation in

... noted in most long-term cultures with HLE cells obtained from children and in early subcultures.1415 Also, fiber differentiation was observed in these shortterm cultures when the cells were grown on cell-substrate adhesion-free surfaces at high density.16 Fiber differentiation and crystallin express ...
Nissl bodies correspond to which of the following cytoplasmic
Nissl bodies correspond to which of the following cytoplasmic

... The correct answer is B. The patient has amyloidosis, which can be present in the manner illustrated. Originally, it was thought that amyloid represented a single protein. However, as the various settings in which amyloidosis occurs were further explored, it was discovered that a variety of clearly ...
CYCLIC CHANGES IN THE CELL SURFACE I. Change in
CYCLIC CHANGES IN THE CELL SURFACE I. Change in

1-1 Test Bank Huether: Understanding Pathophysiology, 4th Edition
1-1 Test Bank Huether: Understanding Pathophysiology, 4th Edition

... Test Bank A. B. C. D. ...
Physikalisches Sonderkolloquium
Physikalisches Sonderkolloquium

... Epithelial morphogenesis is a ubiquitous developmental process whereby animal organs or their primordia form through remodeling of epithelial sheets. We use fruit fly gastrulation as a model to study epithelial morphogenesis. Prior to gastrulation the embryo is a hollow ball of cells made up of a si ...
Nerve activates contraction
Nerve activates contraction

... for cell-cell recognition • The membrane plays the key role in cell-cell recognition. • Cell-cell recognition is the ability of a cell to distinguish one type of neighboring cell from another. ...
αvβ3 integrin-dependent endothelial cell dynamics in
αvβ3 integrin-dependent endothelial cell dynamics in

... each field are recorded at 20 µm intervals, first in DIC and immediately thereafter in epifluorescence modes. The acquisition of the ‘z-stack’ pairs is accomplished within a short period of time (typically a minute) ensuring the correct spatial registration of the corresponding DIC/epifluorescence i ...
DETECTION OF PROTEIN AND mRNA OF
DETECTION OF PROTEIN AND mRNA OF

... The superoxide generating activity of C-20/A4 cells was enhanced by the addition of the calcium ionophore ionomycin or the protein kinase activator PMA, suggesting that both the intracellular calcium concentration and protein phosphorylation are involved in the activation of the enzyme responsible. ...
auxin
auxin

... Bioassay: identification (or quantitation) of a biologically active substance by measuring the effect the substance has on living material. ...
When plant cells decide to divide
When plant cells decide to divide

... Limited data are available on the cyclin partners of CDKA or CDKB during the G2–M transition, although both proteins probably bind plant cyclins expressed at the same timepoint27. The number of known plant cyclin genes has increased rapidly during the past decade. Completion of the genome-sequencing ...
Truncated N-glycans affect protein folding in the ER of CHO
Truncated N-glycans affect protein folding in the ER of CHO

... fully understood. The maturation of N-linked glycans associated to secretory proteins is quite complex. It results from an exquisitely ordered process taking place within subcompartments of the secretory pathway (ER, Golgi apparatus, trans Golgi network). The core glycan, Glc3Man9GlcNAc2, is cotrans ...
Plant Cell Growth and Elongation
Plant Cell Growth and Elongation

... potatoes or metaxylem elements, the final cell size can be 100 000 or 1 000 000 times greater than the original size of the cell, when born in the meristem. Most of the volumetric increase in the protoplast is accounted for by expansion of the vacuole (up to 95% cell volume). The existing cell wall a ...
Cell membrane
Cell membrane

... – These channel proteins allow fast transport. – For example, water channel proteins, aquaprorins, facilitate massive amounts of diffusion. • Some channel proteins, gated channels, open or close depending on the presence or absence of a physical or chemical stimulus. • The chemical stimulus is usual ...
AMBER PARTICLES AS LIVING PLANT CELL MARKERS IN FLOW
AMBER PARTICLES AS LIVING PLANT CELL MARKERS IN FLOW

... the resulting fluorescence is an arithmetical mean of fluorescence for a minimum of 1000 cells. For comparable and valid results it is very important that all investigated samples would contain only alive cells. Therefore, before plant cell cultivation, it is necessary to separate living plant cells ...
The synthesis and migration of nuclear proteins during mitosis and
The synthesis and migration of nuclear proteins during mitosis and

... similar for the interphase and telophase cells of these animals. Therefore the difference between the radioactivity of the interphase and mitotic nuclei demonstrated by the first observations is not produced by a difference in the radioactivity of their cytoplasm. Caro (1962) has calculated that if ...
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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).
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