Immunology: How Man Becomes Allergic To Parts of Himself

Though men and women suffer misery-making allergic reactions to countless things, from ragweed pollen to wheat or eggs or the Rh factor from a husband's blood, medical researchers are confident that no one person can be allergic to another. But now there is a fast-growing body of evidence that something much more insidious and harder to understand may cause some of man's most common and crippling disorders. People, it seems, can become allergic to parts of themselves.

This arcane process of "auto-allergy" may be an important factor in many cases of anemia,...

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