Scientists discovered a gut enzyme that can convert A, B, and AB blood into universal Type O—revolutionizing transfusions and ...

O positive blood is the most common blood type ... In natural disasters and other emergencies, the call is for universal donors in particular. These organizations will also put out a call when ...

While any blood donor is welcome and prized, more Black donors are particularly needed, especially for recipients with sickle ...

O-positive is the most needed blood type, but it's also the most common, as it's seen in roughly 38% of the world's population. Meanwhile, O-negative is considered the universal donor, meaning it ...

AB positive, and AB negative blood types. However, B negative individuals can only receive blood from B negative or O negative donors. O negative blood, also known as the “universal donor ...