what does type o negative blood mean
If you have blood type O. If you fall into the O blood group, you have neither A nor B antigens on your red cells, but both A and B antibodies in your plasma. O positive is the most common blood type; O negative is the universal donor type, meaning those with this blood type can donate red blood cells to anybody. For those with type O, itâs a mixed bag. If you have type O, you are more likely to get ulcers â and believe it or not, to rupture your Achilles tendons.