Fact 1: Lymphocytes are the key cells involved in the immune response.

Fact 2: An allergy attack is an immunal response.

Given the two facts above, answer the question "Lymphocytes are the key cells involved in what?" with the following options: 
- dog attacks
 - major threat to health
 - survival
 - Animal survival
 - cat petting
 - animal adoption
 - allergy attacks
 - critical organs


 

       allergy attacks  