You are presented with the question "what do plasma cells secrete?" and the following answer choices: 
- Chemical energy
 - h2o
 - oxygen
 - antigen fighters
 - harmful substances
 - bioaerosols
 - mucus
 - Organic compounds

Now knowing that plasma cells are activated B cells that secrete antibodies and antibodies are produced to fight antigens, choose the best answer.


 

    antigen fighters     