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

Fact 2: Plasma Cells Plasma Cells Plasma cells are the mature form of B-lymphocytes.

Given the two facts above, answer the question "The mature form of what kind of cell secretes antibodies?" with the following options: 
- more abundant
 - it needs them
 - positive
 - graptolites
 - A Greek letter
 - barnacles
 - B-lymphocytes
 - homogenous


 

       B-lymphocytes  