An Australian man named James Harrison holds the world record for most blood donations. His blood has saved the lives of millions of newborn babies, but how can one man's blood help babies all over the world?

The Rh factor is a protein found on red blood cells; individuals with it are Rh positive, while those without are Rh negative, and it is inherited genetically. Rh incompatibility occurs during pregnancy if an Rh-negative mother carries...

Blood grouping is based on the presence of specific antigens—A, B, and H—on red blood cells, encoded by the ABO gene system. Individuals with blood type A have A antigens and anti-B antibodies, B has B antigens and anti-A antibodies, AB...

What will be the blood type of the probable progenies of blood type AB and blood type O parents? Let's solve this problem in the scenarios below: What will be the phenotype from a father with heterozygous type A, and a mother with...

Do you know your blood type? Even more - do you know what it means? By the end of this video, you'll understand the physiology behind blood types. You'll also understand the significance of the ABO and Rh Blood Grouping Systems.

Overview of the Rh factor and why pregnant women should be tested for it before giving birth.