The answer would be combined statistical area. This is made of metropolitan and micropolitan statistical area which would be located in the United States as well as Puerto Rico that demonstrate both economic as well as social linkage.Hope this is the right answer.
Answer:
b. They are produced by memory B cells
Explanation:
The rapid cell division in activated B cells is followed by the differentiation of daughter cells into the plasma cells. The plasma cells are the precursor for antibodies and memory B cells. The antibodies kill the antigens while memory B cells are long-lived cells.
Hence, antibodies are not produced by memory B cells but by plasma cells.
It is a substance that takes part in and undergoes change during a reaction
