Results 301 to 310 of about 391,392 (354)
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1988
The cytotoxic action of chemicals which transfer electrons from biological reductants to molecular oxygen is believed to result from the formation of •O2-, H2O2, and •OH. Paraquat is one such agent which appears to act in Escherichia coli primarily by generating •O2-, but necessarily H2O2 as well.
J, Krall +4 more
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The cytotoxic action of chemicals which transfer electrons from biological reductants to molecular oxygen is believed to result from the formation of •O2-, H2O2, and •OH. Paraquat is one such agent which appears to act in Escherichia coli primarily by generating •O2-, but necessarily H2O2 as well.
J, Krall +4 more
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Parasynchronous division of HeLa cells
Experimental Cell Research, 1959Abstract It has been observed that populations of human cervical carcinoma cells (strain HeLa) may be induced to undergo parasynchronous division by chilling of the cell culture for a short period. Replicate cultures of HeLa cells were incubated at 37 °C for 24 hours after subculture and then placed at 4 °C for 1 hour.
A A, NEWTON, P, WILDY
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Ribosome Assembly in Hela Cells
Nature, 1972The 80S nucleolar particles have been found to contain peptides characteristic of 30S as well as 50S ribosomal subunits. This lends support to the idea that the maturation of both types of subunits stems from this 80S particle.
J, Shepherd, B E, Maden
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Multiplication of Solitary HeLa Cells
Nature, 1958THERE are many occasions when it is desirable to grow animal cells from solitary inocula (for example, in order to obtain clones); for this reason, it seems worthwhile to record the following conditions which allow multiplication of isolated HeLa cells.
P, WILDY, M, STOKER
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2022
HeLa cells were embedded in Durcupan and observed with a Serial Block Face Scanning Electron Microscope (SBF SEM) following the National Centre for Microscopy and Imaging Research (NCMIR) protocol. The images were acquired with an SBF SEM 3View2XP microscope (Gatan, Pleasanton, CA, USA) attached to a Sigma VP SEM (Zeiss, Cambridge, UK).
Karabag, Cefa +1 more
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HeLa cells were embedded in Durcupan and observed with a Serial Block Face Scanning Electron Microscope (SBF SEM) following the National Centre for Microscopy and Imaging Research (NCMIR) protocol. The images were acquired with an SBF SEM 3View2XP microscope (Gatan, Pleasanton, CA, USA) attached to a Sigma VP SEM (Zeiss, Cambridge, UK).
Karabag, Cefa +1 more
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Mitochondrial Ribosomes in HeLa Cells
Nature New Biology, 1971HeLa cell mitochondria contain 60S ribosomes which seem to consist of subunits of 45S and 35S particles. The 16S and 12S RNA components are coded by mitochondrial DNA.
G, Attardi, D, Ojala
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Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1967
Abstract 1. 1. A simple procedure to obtain DNA-free RNA polymerase (nucleosidetriphosphate: RNA nucleotidyltransferase, EC 2.7.7.6) from HeLa cells was developed from the preparation of extracts in a hypotonic medium in a French pressure cell. 2. 2.
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Abstract 1. 1. A simple procedure to obtain DNA-free RNA polymerase (nucleosidetriphosphate: RNA nucleotidyltransferase, EC 2.7.7.6) from HeLa cells was developed from the preparation of extracts in a hypotonic medium in a French pressure cell. 2. 2.
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Chemical Toxicity on HeLa Cells
Current Medicinal Chemistry, 2006HeLa cells were named for Henrietta Lacks, who died in 1952 from an infection of a special type of cancer. Margaret Gey, her physician, started working with these cancer cells that are still used for medical research. In the present review, an attempt has been made to collect the data for the effects of different chemicals on HeLa cells and to discuss ...
Rajeshwar P, Verma, Corwin, Hansch
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Subribosomal particles of HeLa cells
Experimental Cell Research, 1974Abstract Well defined ring-shaped and rectangular particles are described as intracellular components of post-ribosomal cytosol of HeLa cells. Their morphology might be identical with particles recently isolated from plasma cell tumors and independently from the culture medium of malignant cells.
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Biochimica et Biophysica Acta (BBA) - Specialized Section on Nucleic Acids and Related Subjects, 1964
Abstract An electron-microscope study of the HeLa-cell cytoplasmic and nuclear 74-S ribosomes has been performed. These behave similarly when cations are removed by versene: both break up into 30-S and 50-S subunits. In the heavy part of the centrifugation gradient used to isolate the ribosomes it has been shown that 74-S ribosomes are associated in ...
Winckelmans, Danièle +2 more
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Abstract An electron-microscope study of the HeLa-cell cytoplasmic and nuclear 74-S ribosomes has been performed. These behave similarly when cations are removed by versene: both break up into 30-S and 50-S subunits. In the heavy part of the centrifugation gradient used to isolate the ribosomes it has been shown that 74-S ribosomes are associated in ...
Winckelmans, Danièle +2 more
openaire +1 more source