How blood groups work (with pics)

I don’t really understand any biology, but the following few pics were enough for me to understand the basics of blood groups.

All of the following from Wikipedia: (link)

AB+ blood type is referred to as the “universal recipient”, as it possesses neither Anti-B or Anti-A antibodies in its plasma, and can receive both Rh-positive and Rh-negative blood. Similarly, the O- blood type is called the “universal donor”; since its red blood cells have no A or B antigens and are Rh-negative, no other blood type will reject it.

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