 When you make your appointment to donate blood at redcrossblood.org forward slash missing types, you can help give strength to kids, parents, and grandparents who face life and death challenges. From cancer patients to accident survivors waiting for critical surgeries, your generosity can give someone more life. Don't wait until the letters A, B, and O are missing from hospital shelves. You are the missing type patients need. Visit redcrossblood.org forward slash missing types.