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Halley's Comet "tears" the earth, the eta Aquarius meteor shower is extremely large on the 6th
Time of Update: 2022-05-08
Astronomy science experts introduced that the eta Aquarius meteor shower, which has the "bloodline" of Halley's Comet, was extremely large on May 6, with a maximum time of ZHR (under ideal observation conditions, when the radiant is directly above the head, the number of meteors that can be seen per hour) It is about 50, and the public who likes meteor showers can pay attention to it as appropriate .
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GSK/Vir Announces Final Data of Monoclonal Antibody Sotrovimab Phase 3 COMET-ICH Study
Time of Update: 2021-08-12
Recently, GlaxoSmithKline (GSK) and Vir Biotech announced the final confirmation results of the Phase 3 COMET-ICE study (COVID-19 Monoclonal Antibody Efficacy Trial-Early Care Intention), which shows: Compared with placebo , The monoclonal antibody sotrovimab (formerly known as VIR-7831, GSK4182136) intravenous infusion therapy can significantly reduce the risk of hospitalization or death in high-risk outpatients with mild to moderate COVID-19 .
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Single-Cell Gel Electrophoresis or Comet Assay of Intestinal Epithelial Cells Using Manual Scoring and Ridit Analysis
Time of Update: 2021-02-24
The single-cell gel electrophoresis or comet assay was initially reported in 1984 as a novel technique to directly visualize DNA damage in individual cells ( 1 ).
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Oxidation of Cellular DNA Measured with the Comet Assay
Time of Update: 2020-12-29
The comet assay, or alkaline single-cell gel electrophoresis, originated as a simple and sensitive method for detectingDNA strand breaks in cells such as peripheral blood lymphocytes, cultured cells, and disaggregated tissue, e.g., liver ( 1 , 2 ).
DNA is drawn out of the nucleoid to form a “comet tail” ( see Note 1 ).
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Measurement of DNA Damage Using the Comet Assay
Time of Update: 2020-12-28
Nitric oxide (NO) has the potential to damageDNA directly, and also to react with O 2 to form the nitrosating species N 2 O 3 or to react with O 2 − to form the powerful oxidizing agent peroxyni
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Biomarkers of Oxidative Stress: Methods and Measures of Oxidative DNA Damage (COMET Assay) and Telomere Shortening
Time of Update: 2020-12-09
Telomere length measured by Southern blotting technique allows one to estimate the chronic burden of oxidative stress at the molecular level and is now considered as biomarker of biological aging.
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35,000 "dust" exposed the chemical composition of comet 67P.
Time of Update: 2020-08-18
BEIJING, Dec. 4 (Xinhua Zhang Mengran) According to the physicist's network 3 news, ESA 's Comet Rosetta mass spectrometer collected more than 35,000 dust particles, including the most primitive known carbon-rich material, after analysis of comet 67P / Chulyumov-Gresimenko chemical composition list.
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High speed collision of comets produces amino acids
Time of Update: 2015-07-30
According to a simulation experiment conducted by Lin Xiaochun, a reporter from Xinhua news agency, US and British researchers, it shows that amino acids, the basic substance of life, can be produced
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New scientific evidence suggests that life on earth originated from comet impact
Time of Update: 2015-04-03
Core tip: researchers from the University of California and the University of Hawaii have created dipeptides containing two amino acids under simulated space conditions, which are important basic comp