As females age, their bodies typically undergo two significant changes that generally occur during adolescence and middle age. The first, known as menarche, is the time during puberty when a girl begins having monthly menstruation cycles, which often tends to…
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UK SARS-CoV-2 variant 40% more transmissible than previous strains
Researchers in Japan have estimated that the B.1.1.7 variant strain of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that recently emerged in England is 40% more transmissible than strains previously circulating in the country. The SARS-CoV-2 virus is the agent…
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Pregnancy complications in assisted reproduction linked to a specific process
An experimental study from researchers in the Perelman School of Medicine at the University of Pennsylvania links a specific procedure—embryo culture—that is part of the assisted reproduction process (ART) to placental abnormalities, risk for preeclampsia, and abnormal fetal growth. The…
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