Which is the best explanation for why a person who is allergic to dogs is NOT allergic to
peanuts?
1. The antigens on dog fur are the same as the antigens on peanuts
2.Peanut plants do not have antigens on their cells, but dog fur has antigens that always cause a reaction.
3. The antibodies in the allergic response to dog fur also attack the antigens on a peanut
4.The antibodies in the allergic response to dog fur do not fit on the antigens present on a peanut