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Results 1 - 1 of 1 for Rh isoimmunization
  1. Rh Incompatibility (National Library of Medicine)  
    There are four major blood types: A, B, O, and AB. The types are based on substances on the surface of the blood cells. Another blood type is called Rh. Rh ...
    https://medlineplus.gov/rhincompatibility.html - Health Topics