Put simply: the RH factor is an inherited protein found on the surface of the red blood cells in your system. Having the protein means RH positivity. But if you don't have the protein, you're RH ...
The mysterious Rh factor-in human blood had disturbed the serenity of many a mother-to-be. For if a wife’s blood were Rh negative and a husband’s Rh positive, their child might be stillborn, or born ...
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