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 ...

Dear Dr. Roach: My wife is Rh negative, and I am Rh positive. Our baby (fetus) is positive. I am worried about my wife and my baby. Is this dangerous? What can be done? This is her second pregnancy. — ...

Every year, some 10,000 ailing babies are born in the U.S. to parents with hostile blood types caused by the mysterious Rh factor.† Even with the most modern treatment, the best that doctors could ...