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 ...

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 does more than move oxygen and fight infection. It also carries a record of where animals came from. A new evolutionary ...

Immature ganulocytes, also called myeloblasts, are a type of young white blood cell. Unusual amounts of myeloblasts usually occur due to problems with bone marrow, such as certain types of blood ...

(Douglas Sacha/Getty Images) You might not think your blood type has much to do with your health, but research suggests that ...

Knowing your blood type is crucial medical information, but unless you've given blood before you might not be sure what yours is. I realized this when I was asked for mine while filling out paperwork ...