Fact 1: Plasma cells are activated B cells that secrete antibodies.

Fact 2: Antibodies are also called gammaglobulins.

Given the two facts above, answer the question "what do plasma cells secrete?" with the following options: 
- Chemical energy
 - water
 - Organic compounds
 - diseases
 - bioaerosols
 - harmful substances
 - gammaglobulins
 - protons


 

       gammaglobulins  