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Was a study that created a hybrid COVID-19 virus too risky?
The objective was to tease apart whether Omicron’s spike protein explains why it is less pathogenic (meaning it causes less severe disease). The answer could lead to improved COVID-19 diagnostic tests and better ways to manage the disease, the preprint authors say. Somewhat surprisingly, the hybrid virus killed eight of 10 infected mice, whereas mice infected with Omicron got sick but did not die. This suggests the mutations that make Omicron less pathogenic must involve changes in proteins other than the spike protein, the authors say. What are critics of the study saying? They question the scientific val...
Source: Science of Aging Knowledge Environment - October 18, 2022 Category: Geriatrics Source Type: research

News at a glance: New gene therapy, Europe ’s drought, and a black hole’s photon ring
ARCHAEOLOGY Drought exposes ‘Spanish Stonehenge’ for study Scientists are rushing to examine a 7000-year-old stone circle in central Spain that had been drowned by a reservoir for decades and was uncovered after the drought plaguing Europe lowered water levels. Nicknamed the “Spanish Stonehenge”—although 2000 years older than the U.K. stone circle—the Dolmen of Guadalperal (above) was described by archaeologists in the 1920s. The approximately 100 standing stones, up to 1.8 meters tall and arranged around an oval open space, were submerged in the Valdecañas reservoir after the construction of a ...
Source: Science of Aging Knowledge Environment - August 25, 2022 Category: Geriatrics Source Type: research