Clinical trials to explore the use of universal artificial blood are underway in Japan after initial volunteer doses began in March. The research, led by Professor Hiromi Sakai's laboratory, plans to ...

Human blood already comes in a bewildering variety of types, but researchers have now identified a new one so rare that only three people on the planet are known to carry it. The finding exposes just ...

Across life on Earth, blood comes in blue, green, purple, even clear. But why? And what makes your blood different from mine? This is the strange world of blood—what it does, why it varies, and why we ...

Here’s what you’ll learn when you read this story: There are rare blood types beyond the eight most common ones, and researchers have discovered one more that brings the total count to 49. Blood type ...