You are presented with the question "What are the key cells in an allergy attack?" and the following answer choices: 
- layers of fat
 - Lymphocytes.
 - fur and fat
 - bone cells
 - muscle cells
 - the skin
 - Red blood cells
 - animals

Now knowing that lymphocytes are the key cells involved in the immune response and an allergy attack is an immunal response, choose the best answer.


 

  Lymphocytes.       