Summary: The placenta seems like the perfect organ to take care of a fetus. Letting in everything good and keeping out everything bad. But the placenta isn’t perfect. OBGYN <a href="http://medicine.utah.edu/faculty/mddetail.php?facultyID=u0031449">Dr. Kirtly Parker Jones</a> explores how the womb works and how infections like the Zika virus can sneak past its defenses to affect the growing fetus.
