Your blood type is set by antigens, markers on your red cells (A, B, and Rh). Your plasma carries antibodies against the antigens you lack. Pick a type to see which types match.
Type O−
Blood typesABO & Rh
📷 Reference image
A real labeled figure. Compare it with the interactive above.
Blood Types — OpenStax, CC BY 3.0 (via Wikimedia Commons)
