The Scientist and Jerome Siegel | Mar 1, 2016 | 10+ min read
Once believed to be unique to birds and mammals, sleep is found across the metazoan kingdom. Some animals, it seems, can’t live without it, though no one knows exactly why.
The COVID-19 pandemic is still with us. Biomedical innovation has rallied to address that pressing concern while continuing to tackle broader research challenges.
Researchers have overturned the long-standing notion that lymph nodes are always necessary for launching the mammalian immune response. Fluorescently-labeled mouse liver Image: Burkhard Becher According to a linkurl:study;http://www.plosbiology.org/article/info%3Adoi%2F10.1371%2Fjournal.pbio.1000109 published in this month's issue of PLoS Biology, in the absence of lymph nodes, cell-mediated immunity can be activated in the liver. The findings undercut immunology "dogma," which says the immun