There are different blood types: A, B, AB, and O, with each also being Rh-positive or Rh-negative. Knowing your blood type is important for safe blood transfusions and organ transplants. Type ...

Close up photo of female scientist holding a laboratory pipette and a blood sample tube for covid-19 in laboratory. She is wearing a protective suit, laboratory glasses, surgical mask and surgical ...

There’s more history in your blood types than you think, and it didn’t begin with humans. Here’s what we know about them, ...

Please provide your email address to receive an email when new articles are posted on . Having O and rhesus-negative, or Rh–, blood was associated with a slightly lower risk for COVID-19 infection and ...

One out of every eight marriages in the U.S. is a potentially dangerous mismatch, biochemically speaking. In these 200,000 or more marriages a year, the wife lacks the Rh factor present in most blood ...

Does your blood type – specifically, your Rh factor (positive or negative) – matter in your daily life? Not in the slightest. But when pregnant your Rh status can matter, especially if it's negative.

Close up photo of female scientist holding a laboratory pipette and a blood sample tube for covid-19 in laboratory. She is wearing a protective suit, laboratory glasses, surgical mask and surgical ...