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In a paper published in PLoS One this week, a team led by researchers at the University of Pittsburgh shows that human embryonic and induced pluripotent stem cells show similar responses to DNA damage. Specifically, the team writes, "iPS cells [temporarily] arrest cell cycle progression in the G2 phase of the cell cycle, displaying a lack of the G1/S cell cycle arrest similar to human ES cells" in response γ-irradiation-induced apoptosis.

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The World Health Organization will be providing low-cost COVID-19 tests to low- and middle-income nations, according to Reuters.

Nature News examines how the confirmation of Amy Coney Barrett to the US Supreme Court could affect scientific agencies.

Nobel Prize-winner Arthur Ashkin, who developed optical tweezers, has died at 98, the Washington Post reports.

In PNAS this week: altered gene expression in brain samples from Alzheimer's disease patients, effects of gene mutations found in bladder cancer, and more.