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The quest to untangle why pregnancy can turn deadly
- bediger4000 10y agoCompared to egg-laying (first amniotes, approx 340 million years ago), pregnancy hasn't been around that long. Combined with vertebrates adaptive immune system, a placental-mammal-style pregnancy is bound to be problematic. Interesting that they're trying to untangle specifics, but the overarching "why" isn't that mysterious.