Results 261 to 270 of about 406,501 (295)

Changes in Surface Charge of HeLa Cells during the Cell Cycle

Nature, 1967
A METHOD of obtaining large numbers of fixed cells in metaphase arrested by colchicine, from a population of cells growing on a glass surface, by a method dependent on the attenuated adhesion of the cells to the surface has been described1. A modification of this method was suggested to obtain a viable population of synchronous cells.
T P, Brent, J A, Forrester
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Adhesion and spreading of cells on charged surfaces

Journal of Theoretical Biology, 1975
Rival theories of cell adhesion are divided into long-range or contact, respectively. An experimental observation capable of deciding between them is the increasing attachment of negatively charged cells to surfaces of increasing negative charge density.
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Effect of pH and Surface Charge on Cell Uptake of Auxin

Nature New Biology, 1973
THE uptake of the auxin indol-3-yl acetic acid (IAA) into plant cells is of interest not only because this compound is a hormone, but also because its movement across the plasma membrane is probably involved in the polar transport of auxin1. The plasma membrane contains auxin binding sites and may be a primary site of hormone action2.
P H, Rubery, A R, Sheldrake
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Amplified effect of surface charge on cell adhesion by nanostructures

Nanoscale, 2016
Nano-biointerfaces with varied surface charge can be readily fabricated by integrating a template-based process with maleimide-thiol coupling chemistry. Significantly, nanostructures are employed for amplifying the effect of surface charge on cell adhesion, as revealed by the cell-adhesion performance, cell morphology and corresponding cytoskeletal ...
Li-Ping, Xu, Jingxin, Meng, Shuaitao, Zhang, Xinlei, Ma, Shutao, Wang   +4 more
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ROLE OF ELECTRIC SURFACE CHARGE OF CELL MEMBRANE IN PHAGOCYTOSIS

Acta Pathologica Japonica, 1973
An attempt to clarify the role of surface charge on cell membrane was performed on two cell types, phagocytic (rat peritoneal macrophage) and non‐phagocytic cells (Ehrlich ascites tumor cell). The electrophore‐tic mobility of both cells was remarkably reduced by the treatment with protamine sulfate, and diminished considerably by the increase of ionic ...
H, Nagura, J, Asai, Y, Katsumata, K, Kojima   +3 more
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The Surface Charge of Mesodermal and Neural Cells of Triturus Embryos

Differentiation, 1977
The electrical surface charge of disaggregated mesodermal and neural cells of the neurula stage of Triturus vulgaris embryos is estimated by using the apparatus described in Figure 1. The results showed a significant difference between the net charges of these two cell types: the neural cells had a clearly negative charge, whereas the mesodermal cells ...
M J, Mela, S, Toivonen
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Cell internalization kinetics and surface charge accessibility of surface-modified PAMAM dendrimers

Organic & Biomolecular Chemistry, 2023
The accessibility of surface cationic charges is a key determinant for the cell internalization capacity of surface-modified PAMAM dendrimers with acetyl, folate or poly(ethylene glycol) groups.
Carola F. Díaz, Diego L. Cifuentes, Maximiliano Oyarzún, Verónica A. Jiménez, Leonardo Guzmán   +4 more
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The intensity of cell surface charge defines the malignancy of cancer cells

Chemical Engineering Journal
Wenwen Jia, Quanhu Sun
exaly   +2 more sources

Electrostatic Behavior of the Charge-Regulated Bacterial Cell Surface

Langmuir, 2008
The electrostatic behavior of the charge-regulated surfaces of Gram-negative Escherichia coli and Gram-positive Bacillus brevis was studied using numerical modeling in conjunction with potentiometric titration and electrophoretic mobility data as a function of solution pH and electrolyte composition. Assuming a polyelectrolytic polymeric bacterial cell
Yongsuk, Hong, Derick G, Brown
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Cell surface negativity and the binding of positively charged particles

Journal of Cellular Physiology, 1971
AbstractThe binding of positively charged, colloidal ferric oxide particles to the surfaces of Ehrlich ascites tumour cells, before and after incubation with neuraminidase and/or ribonuclease, has been studied by electron microscopy. An attempt has been made to correlate the amount of binding observed, with the electrophoretic mobilities of the cells ...
L, Weiss, R, Zeigel
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