to each geographic region. so hence why we develop a regional allergy mix. >> say i live in new york and i have allergies in new york and then i go to texas, would i have to get the texas formula for texas or texas pollens not bother me if i move around? >> if they bother you, you need the texas formula. my wife, for example, she was born in california. she lives in north carolina now. so she still uses the pacific mix because that's where she developed her antigens as a child. >> what are antigens? >> that's where the body has created this reaction to certain pollens that you grew up with. if you grew up in the great lakes, but now you live in california, you may still need the great lakes formula. some people may need both. >> basically what you are saying to me if i am getting this correctly, the pollen blows around a. it goes into