A blood type found in just three people is shaking up what we thought we knew about human biology. Called B(A), it doesn’t quite fit into the usual ABO system and hints that more hidden variations ...

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 A(B) is caused by a four gene mutations and was ...

Here's what you'll learn when you read this story: While interesting in and of themselves, antigens become especially important when it comes to donating blood to and receiving blood from others. For ...