In this lab I have learned that there are four different types of blood, there is type A, type B, type AB, and type O. Each type has unique traits about it. Type O has no proteins attached to the red blood cells but has both antibodies, a and b. Type AB has both proteins but no antibodies. I never knew that there was such thing as a universal donor or universal recipient because I thought if someone received a blood donation it had to be their exact blood type. Type O blood is the universal donor and type Ab is the universal recipient. This could be useful at a crime scene as they could do a field test on it to see if a blood stain is the victims blood or someone elses. Red blood cells are not part of DNA profiling because the suspect and victim could coincidentally have the same blood type and could possibly send the investigation into a tailspin. This lab made me think of how else we could use red blood cells for a forensic advance. I would want to learn if there was a way to put type A blood into a person with type B blood without having it clump and clog the persons artery/vein.