The development of the mammalian placenta depends upon an unusual twist that separates DNA’s classic double helix into a single-stranded form, Yale researchers report July 15 in the journal Nature.

The placenta is an organ that grows in the womb during pregnancy. Placental insufficiency (also called placental dysfunction or uteroplacental vascular insufficiency) is an uncommon but serious ...

TOKYO—Call it the oxygen bar of the future, but with needles and nurses, vitamins, and a shot of human placenta. Located in a tony complex—upstairs from L’Occitane and Armani, down the hall from ...