A pregnant woman's blood sample taken in 1972 was mysteriously missing a surface molecule found on all other known red blood ...

For half a century, a tiny quirk on the surface of red blood cells has puzzled doctors and put a small group of patients at ...

A pregnant woman's blood sample taken in 1972 was mysteriously missing a surface molecule found on all other known red blood cells at the time. More than 50 years later, that strange absence finally ...