A key virus fighter is implicated in pregnancy woes
Fetal mice whose immune system revved up in response to their mom’s Zika infection died or grew poorly
KNOTTY ISSUES Placental tissue (on the right) treated with an immune protein that fights viruses developed knotty structures that resembled those associated with pregnancy complications. Untreated placental tissue (on the left) does not show these structures.
L. Yockey et al/Science Immunology 2018, Carolyn Coyne
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