Results 21 to 30 of about 106,793 (279)

The Comet Assay: Tails of the (Un)expected. Use of the comet assay in pharmaceutical development.

open access: yesFrontiers in Genetics, 2015
In genotoxicity testing of pharmaceuticals the rodent alkaline comet assay is being increasingly used as a second in vivo assay in addition to the in vivo micronucleus assay to mitigate in vitro positive results as recommended by regulatory guidance.
Bas-jan Van Der Leede
doaj   +1 more source

The Earth and Comets' Tails [PDF]

open access: yesScientific American, 1910
IN spite of the unreserved predictions of astronomers, the earth did not pass through the tail of Halley's comet on May 18–19, nor subsequently. The tail as seen in the morning sky, previous to the transit of the comet across the sun's disc, appeared like a long and straight beam of light stretching from the horizon to Aquila.
openaire   +3 more sources

The spectrin cytoskeleton is crucial for adherent and invasive bacterial pathogenesis. [PDF]

open access: yesPLoS ONE, 2011
Various enteric bacterial pathogens target the host cell cytoskeletal machinery as a crucial event in their pathogenesis. Despite thorough studies detailing strategies microbes use to exploit these components of the host cell, the role of the spectrin ...
Tyson Ruetz   +2 more
doaj   +1 more source

In vitro assembled baculovirus comet tails.

open access: yes, 2014
Images of viruses and actin tails obtained in in vitro assays after negative staining and conventional transmission EM. (A) Budded baculovirus in the infected cell supernatant. (B) De-enveloped virus obtained after detergent treatment of the budded virus.
Julia Pfanzelter (508928)   +12 more
core   +1 more source

Effect of terahertz irradiation on DNA damage repair in living cells

open access: yesFEBS Open Bio, EarlyView.
We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno   +3 more
wiley   +1 more source

Characterization of the Dust and Sodium Tails of Comet C/2020 F3 (NEOWISE) from Parker Solar Probe and Amateur Observations

open access: yesThe Planetary Science Journal
Comet C/2020 F3 (NEOWISE) reached perihelion on 2020 July 3 at 0.29 au and exhibited a highly structured dust tail. Using a simplified Finson–Probstein model, structures such as striae, observed in the tail in images obtained by the Parker Solar Probe ...
Qasim Afghan   +4 more
doaj   +1 more source

Live cell imaging of baculovirus actin comet tails.

open access: yes, 2014
(A) Overview of GFP-actin expressing B16 melanoma cell that was infected with baculoviruses tagged with mCherry. (B) Relative distribution of actin and associated proteins along baculovirus comet tails.
Julia Pfanzelter (508928)   +12 more
core   +1 more source

Halide Composition Controls Phase Morphology and Device Specific Performance in Perovskite Photovoltaics and Light Emitting Diodes

open access: yesAdvanced Functional Materials, EarlyView.
We demonstrate that halide composition determines phase morphology, governing distinct operating mechanisms in mixed halide perovskites. Phase segregating 75% Br compositions enhance solar cell performance, whereas intrinsically phase‐separated 95% Br compositions provide stable light emitting diodes.
Tal Binyamin   +6 more
wiley   +1 more source

Recurrent Cometary Activity Discovered on Quasi-Hilda Jupiter Family Comet 362P/(457175) 2008 GO98

open access: yesThe Astrophysical Journal Letters
We report the discovery of recurrent activity on quasi-Hilda comet (QHC) 362P/(457175) 2008 GO _98 . The first activity epoch was discovered during the perihelion passage of 362P in 2016, so we were motivated to observe it for recurrent cometary activity
Kennedy A. Farrell   +7 more
doaj   +1 more source

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