Medically reviewed by Amelia MacIntyre, DO 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 ...

Dear Dr. Roach: I’m an 84-year-old Caucasian man in good health. In college, I donated blood and was told I was Type O-negative. Later in life, I donated many pints to the Red Cross. About 45 years ...

When you're a mom-to-be, one of the prenatal tests you may get is an antibody test or antibody screening. It looks for certain antibodies, special proteins made by your immune system, in your blood.

Rhesus (Rh) incompatibility is amongst the many complications couples face in marriage (Image: Shutterstock) Couples are often plagued by various problems in marriage including fertility and pregnancy ...

This study was undertaken to determine whether Rh-positive mothers induce immunologic tolerance or primary sensitization in their Rh-negative daughters as the result of transplacental passage of the ...

* Rh-null blood lacks all 61 Rh antigens, making it extremely rare and medically valuable * It can save lives as a universal donor within rare blood types * Rh-null individuals //can only receive ...

Only one in every six million people have the Rh null blood type. Now researchers are trying to grow it in the laboratory in the hope it could save lives. Blood transfusions have transformed modern ...