origin

Although first detected in December 2019, COVID-19 was inferred to be present in Hubei province, China, for about a month before (1). Where did this new human disease come from? To understand the origin of the COVID-19 pandemic, it is…

SummaryBarrett's esophagus (BE) is a premalignant condition with increased risk for the development of esophageal adenocarcinoma (EAC). Surveillance relies on regular endoscopy with biopsies to detect dysplasia (disordered cellular growth)…

SummaryIn a sharp tightening of the diplomatic screws, the director-general of the World Health Organization (WHO), Tedros Adhanom Ghebreyesus, is urging China to increase its transparency about the early days of the COVID-19 pandemic and…

Down with leukemiaDown syndrome is a congenital disorder caused by the trisomy of chromosome 21, and it is associated with a greatly increased risk of leukemia with origins in fetal development. Infants with Down syndrome are often born…

From savory to sweetSeeing a bird eat nectar from a flower is a common sight in our world. The ability to detect sugars, however, is not ancestral in the bird lineage, where most species were carnivorous. Toda et al. looked at receptors…