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

Fact 2: Allergies are an immune system response.

Given the two facts above, answer the question "Lymphocytes are a key cell involved in what type of reaction?" with the following options: 
- Final Symphonic movement
 - illness
 - positive
 - fever
 - allergic
 - autologous transplant
 - allogenic stem cell transplant
 - sweating


 

     allergic    