results from an insufficient number of circulating platelets

blood type with antigen A and anti-B antibodies

a clot that develops and persists inside and unbroken blood vessel

blood type with both antigen A and antigen B and no antibodies

the "recognizers"; attach to RBC's bearing surface antigens different from those on the recipient's blood

binding of the antibodies which causes foreign RBC's to clump

hormone which promotes production of blood cells

small, purplish blotches on the skin resulting from a condition which suppresses bone marrow

substance that the body recognizes as foreign

a floating clot

blood type with antigen B and anti-A antibodies

rupture of RBC's

blood type with neither antigen A nor antigen B and both antibodies

combines with thrombin to produce protein strands of fibrin which aid in clotting

stem cells which form all blood cells

stoppage of bleeding

hereditary bleeding disorders that result from lack of any clotting factors

substance which is released from injured tissue

process of blood cell formation