Add Yahoo as a preferred source to see more of our stories on Google. Close-Up Of Donated Blood In Bag Knowing your blood type is critical during emergency health situations. Knowing your blood type ...

Recent research suggests that your risk of stroke may actually be associated with your blood type. However, the explanation ...

More than 100 years ago, Dr. Karl Landsteiner discovered that not all red blood cells are alike. He found that, when different people's blood was mixed, it would often clump up and curdle, destroying ...

Our blood consists of many cell types that develop through different stages from a precursor type -- the blood stem cell. An international research team has now investigated the developmental pathways ...

Blood cancers start when blood cells become cancerous and disrupt red blood cells, white blood cells, or platelets, often beginning in bone marrow. The main blood cancer types include leukemia, ...

Blood cells carry a deep evolutionary history. A new analysis suggests their earliest ancestors were macrophage-like cells ...