Editor’s note: Find the latest COVID-19 news and guidance in Medscape’s Coronavirus Resource Center. Two scientific studies establishing a causal relationship between the AstraZeneca COVID-19 vaccine and severe
Three articles published in Nature describe studies of human prenatal development outside the body. The techniques employed in the studies may illuminate events that unfurl as the beginnings
A massive Swedish cohort study suggesting that biologic agents reduce the known excess risk of lymphoma in patients with rheumatoid arthritis was hailed as one of the high
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