Group A positive or A destructive: A antigens are current around the surfaces of blood cells. Anti-B antibodies are existing while in the plasma. The platelets in blood enable the clotting, or coagulation, of blood. When bleeding takes place, the platelets group with each other to produce a clot. https://raymondakpvz.blog-kids.com/36592176/examine-this-report-on-blood-castle-mu-online